		Thorax	Abdomen	Wings
rogersi group	GA to TX	Usually yellow, three black stripes	Brownish-red	Held folded over abdomen
festivus group	Widespread	Green to orange-brown, with three orange stripes, anterior one narrowly black centrally in female	Green, with dark apical bands in male	Held apart

		Male terminalia
A. scopula	AB to QB & NY, s. to KS	Inferior volsella similar in width and length to superior
A. festivus	QB, s. to KS & TX	Inferior volsella blunt, about 2.3x as long as wide
A. taenionotus	IA to MI & PN, s. to FL	Inferior volsella narrow, about 4x as wide
A. sp. “coös” & “varvestris”	Connecticut River	Identical to festivus

8 of 118

Chironomus

Some green-brown type, apruinose
Some grey or brown pruinose striped
Unpatterned wings

widespread

Subgenera	Thorax	male terminalia	Notes
C. (Chironomus)	Pruinose	Gonostyle usually widest at middle, narrowing distinctly after middle and paler; superior volsella evenly curved and narrowed toward tip	Most species; some exceptions to gonostyle rule include C. crassicaudatus
C. (Chaetolabis)	Glossy, green or orange with dark vittae	Gonostyle as in Chironomus but more distinctly narrowed; T9 triangular and anal point long, narrow, and bulbous	Fore tibia dark, at least brown
C. (Camptochironomus)	Pruinose, green or light brown with dark vittae	Gonostyle widest at base; superior volsella almost as long as gonostyle and hairy; T9 and anal point blunt	Fore tibia green or light brown, darker in males
C. (Lobochironomus)	Vittae glossy, otherwise pruinose	As in Chironomus, but gonostyle not swollen medially; superior volsella swollen medially and with a narrow apical extension	Common species green with darker bands on abdomen

9 of 118

Chironomus (Chironomus) complex anthracinus

Species	Range	Thorax	Abdomen	Legs	Wings
C. anthracinus	CA-AB-QC- IN-NH	Blackish	Blackish with brown body hairs	Legs blackish brown, with long sparse tarsal beard.	Wing length 5.6 mm, Anterior wing veins dark brown, veins slightly darker; posterior wing veins pale brown.
C. nr. anthracinus	WI	?	?	?	?
C . species Apple Valley	CA, High altitude lake	?	?	?	?
C. rempelii	AB - SK, WI	Dark species, thorax black	Abdominal segments black with grey apical margins	Legs black, anterior tarsi bearded. Female generally resembles male, but legs are paler - dark brown, with proximal half of anterior femur somewhat yellowish.
C . sp. NAI	BC, ON		Black or blackish with grey bands along the caudal margins of each abdominal tergite.	Fore tarsus with a long sparse beard.	Wing length 4.2 - 4.9mm

Has broad anal point

10 of 118

Chironomus (Chironomus) complex atrella

Species	Range	Thorax	Abdomen	Legs	Wings
C. atrella	Widespread	Blackish brown, middle portion of pronotum somewhat widened.	Blackish brown. Genitalia Similar to those of T. decorus (fig. 136A) but the anal point narrower and the superior appendage shorter and stout.	Brown, fore tarsus with a long sparse beard.	Anterior wing veins brown, vein r-m somewhat darker; posterior wing veins pale brown. Wing length about 4.1mm
C. 'grodhausi'	CA

Larger specimens of this species are very similar to smaller specimens of T. utahensis, but may usually be distinguished in the male by the somewhat

sparser tarsal beard, narrower anal point, paler legs, and greater pruinosity of the body. The species is also similar to T. tuxis.

11 of 118

Chironomus (Chironomus) complex calligraphis

Species	Range	Thorax	Abdomen	Legs	Wings
C. anonymus 1896	CA, TX, MS	Head and thorax with dark brown markings, scutellum pale, Thorax with a small but distinct median tubercle	Abdominal tergites II-IV with saddle shaped marking, becoming a median spot on V-VI.	all femurs with a narrow apical dark fascia, bases of all tibiae also dark, broadest on foretibia.	Wing length 2.71 (2.44-3.06) mm. setae in squamal fringe; almost entirely pale, anterior wing vein slightly darker.
C. calligraphus (sp. 2w) 1905	CA, south east		Abdomen with anterior triangular brown mark, then most of other tergites brown.		Wing length 2.73 mm
C. hawaiiensis	HI, CA	Antennal plume with wide dark band	Abdomen with dark, posteriorly pointed, triangular area on midline with generally fairly narrow transverse band at or near anterior margin;		Wing length - 2.28-3.52 mm
C. species WOC	Southeast	?	?	?	?
sp. 2t.	FL

C. anonymus

12 of 118

Chironomus (Chironomus) complex decorus

Species	Range	Thorax	Abdomen	Legs	Wings
C. decorus	Widespread	Ground color light pruinose green to stramineous or light brown. Antenna, mouthparts, and thoracic markings brownish ochraceous to dark brown	Abdomen usually pale green with the tergites 2 to 7 each with a central transverse brown band occupying from 0.25 to most of its length; genitalia brown.	Legs stramineous, greenish towards their bases and brownish towards their apices; apex of fore femur and basal 0.3 of fore tibia pale brown; apices of tibiae and tarsal segments brown; fore tarsus without a beard or sometimes with a short beard.	Wing veins pale brown; vein r-m and the surrounding wing membrane dark brown; veins Cu2 and 2A and a narrow margin of the surrounding wing membrane more or less brown
C. bifurcatus	KS - MA	Head and thorax dark brown, postnotum blackish, scutellum paler, median and lateral vittae weakly separated by lighter colour	Abdomen strongly vittate, with the basal dark bands occupying half or more of each tergum, except on tergum VI where the dark marking is more saddle-shaped, as C. decorus, Basal dark band at anterior of abdominal tergites, broader at mid-line and becoming more extensive until segs. VI-IX are almost completely dark.	Legs pale yellowish brown.	Wing length 2.8-3.9mm
C. blaylocki	TN	Head and thorax with extensive dark markings	With extensive dark markings	Legs infuscate.	Wing length about 2.87 mm
C. harpi	Midwest, ON, SD	Ground color of head and thorax yellowish, antennal pedicels, thoracic vittae, postnotum, sternoplueron, postnotum blackish brown. Thorax with small but distinct mesonotal tubercle	Blackish brown, but abdominal color seasonally variable with late spring specimens with only a basal dark band and distal yellowish band increasing from 1/3 on TII to 2/3 on TV.	Legs also seasonally variable from all dark to F,Ti and Ta1 pale on all legs.	Wing length 3.20 (2.63-3.67) mm
C. mozleyi		?	?	?	?
C. winnelli		?	?	?	?
C . 'butleri'	Widespread	Thorax brownish yellow with brown vittae	Saddle spots on TII-VI, then whole segment darkened, about 10 setae in a single pale spot on TIX.	Legs with darkening of the joints of the anterior tarsus and tibia.	Wing length 4.0 mm.
C. quinnitukqut	CT, MA	Head, thorax, including most of antepronotum and scutellum paler yellowish; thoracic vittae, postnotum largely blackish.	Blackish	Blackish	Wing length 3.70 (2.96-4.31) mm
C. utahensis	West of MN	Thorax yellowish-brown to dark brown, with vittae, postnotum blackish brown.	Abdomen largely blackish-brown, terga II-VIII with a slightly paler brown, narrow apical fascia; genitalia dark.	Legs with femora and tibiae yellowish brown; tarsi largely blackish; basal third of TA1 on PII and PIII, slightly paler, fore tarsi heavily bearded.	Anterior veins darkened, Wing length 3.77 (3.10-4.53)mm
C. alchichica	Lake Alchichica Mexico	Head yellowish brown, thorax dark brown.	Abdomen pale brown with dorsal dark markings on TI-VII, wider on TVIII	Uniform pale yellow	Wings transparent without setae, anterior veins pale brown, r-m crossvein and C, M, R1, R4+5 dark brown. Wing length 3.53 (2.99-4.25) mm.
C. maturus	Widespread	Mesonotum with a slight hump but no discernable median tubercle.	Dark band across base of each abdominal segment I-V, with apical area paler infuscate yellow, similar to C. bifurcatus.	Legs with tibiae infuscate yellow, middle and hind tarsi becoming darkened apically; foretarsus bearded.	Wing length about 3.64 mm
C. whitseli	BC CA	Female image below	Abdominal segments with broad basal fasciae which extend all the way to the base of most terga.		Wing length 2.62-3.77 mm

C. maturus

C. whitseli

C. quinnitukqut

C. bifurcatus

C. harpi

13 of 118

Chironomus (Chironomus) complex decorus undescribed

	Range	Thorax	Abdomen	Legs	Wings
C . sp. Cape Cod	MA	?	?	?	?
sp. b	NB, ON, WI		The gonostylus is relatively short and stout compared to those of C. bifurcatus or C. blaylocki, narrowing sharply over distal quarter. The superior volsella shows similarities to that of C. blaylockii.e. S-type, closest to Strenzke"s figure c. Inferior volsella with simple setae, reaching to about middle of the gonostylus.
sp. c	ON, VT	?	?	?	?
sp. j	NB - ON	?	?	?	?
sp. 2a	ON	?	?	?	?
sp. 2b	Widespread		Abdomen appears to have a brown band over the anterior 2/3 of segments II-IV, heaviest in the midline, then most of segments V-VIII. Basal dark band at anterior of abdominal tergites, broader at mid-line and becoming more extensive until segs. VI-IX are almost completely dark.	Legs pale but with knees and anterior tarsi darkened.	Wing length 3.36 mm
sp. 3h	NB, ON		Abdominal coloration as in C. maturus, but paler. Superior volsella very slightly darker than the rest of the terminalia. Anal point broad.		Wing length about 3.3mm
sp. 3i	ON, PA
sp. 3j	SK	?	?	?	?
sp. 4l	KS, LA	?	?	?	?
sp. 5u	ON

14 of 118

Chironomus (Chironomus) decumbens like

Species	Range	Thorax	Abdomen	Legs	Wings
C. decumbens (?)	AK	Blackish brown, middle portion of pronotum hardly at all widened; mesoscutum without a median tubercle	Blackish brown	legs slightly paler than the body	anterior wing veins brown, vein r-m slightly darker; posterior wing veins tinged with light brown
C . species NAIII		Dark species, with lighter patches on sides of thorax.	Female imaged		Wing length about 5.25 mm.

15 of 118

Chironomus (Chironomus) complex hyperboreus/aberratus

Species	Range	Thorax	Abdomen	Legs	Wings
C. jonmartini 1979	NWT	Entirely black, scutellum paler	Entirely black, posterior margins of tergites often greyish	Paler	Wing length 3.0-5.0 mm, haltere knob dirty white
C. hyperboreus 1845	AB, AK, arctic.	Thorax, scutellum, etc., blackish, Middle portion of pronotum slightly broadened; mesoscutum without a tubercle.	Body moderately stout. Abdominal segments blackish at base, with a brownish band across the distal Â¼ to 1/3.	Legs brown (blackish in type description), darker towards the apices. Bases of anterior and midlegs brownish, rest of legs blackish. Fore tarsus with a long dense beard, BR about 4.	Wing length 4.2-5.2 mm
C. nr. hyperboreus or the C. aberratus group	Canada	Thorax dark brown, vittae, scutellum, sternoplueron. postnotum pale	Abdomen dark brown with a narrow pale band distal on segmentes VI and VII, sometimes very narrow on preceding segments.	Legs blackish	Wing length about 4.2-4.8 mm, anterior wing veins and crossvein slightly darkened
C. sp. h.	NWT, ON	?	?	?	?
C. cucini 1969	Widespread northish	Color mostly brown, thoracic vittae and postnotum blackish brown	Abdomen dark brown with apical quarter of segments I-VIII pale yellow.	Legs dark, tarsal beard very short	Wing length 4.1-5.2 mm; squama fringed
C. magnus 2015	Southeast US, OH, OK	Dark brown, Morphologically similar to C. plumosus	Abdominal segments entirely light brown without dark bands or other markings. Superior volsella about twice as long as in C. plumosus. Gonostyle swollen just beyond half way, then narrowing sharply.	Fore leg with beard, BR <6 (compared to C. plumosus where BR is >6).	Wing length greater than 7 mm, slightly longer than C. plumosus
C. islandicus 1913	Nunavit, Iceland
C . nr. tuxis	AB, MB	?	?	?	?
C . nr. sp. 2u	SD	?	?	?	?
C. tuxis 1930	Eastern	Blackish brown and pruinose brown	Body moderately slender.	Legs brown towards their apices, pale towards the base, Fore tarsus without a beard.	Wing length 3.4 mm, Anterior wing veins brown, vein r-m darker, posterior wing veins not pigmented

C. nr. hyperboreus or the C. aberratus group

C. cucini

16 of 118

Chironomus (Chironomus) complex pilicornis

Species	Range	Thorax	Abdomen	Legs	Wings
C. pilicornis	North of SD	Coal black	Black. Only a rectangular or quadratic field at posterior of abdominal segment VII is light	Legs black brown, pale in comparison to thorax. Foretarsus with long very dense beard.	Halteres brownish. Wing length about 5.5mm
C. sanctipauli	Alaska		Male genitalia 14		Wing length about 5.3mm
C . species 5e	Greenland		Male genitalia GL25		Wing length about 5.2mm

17 of 118

Chironomus (Chironomus) complex plumosus

Species	Range	Thorax	Abdomen	Legs	Notes
C. entis	North of IN	Like plumosus	Like plumosus, Genitalia other image	Like plumosus	Very similar to plumosus
C. plumosus	Widespread	Ground color stramineous or light brown, often tinged with green. Darker markings vary from light brown to blackish brown and are most extensive when darkest: Pedicel, flagellum, clypeus, mouthparts, thoracic markings.	Transverse band on tergites 1 to 6, and all of the seventh and following tergites light brown to blackish brown. The dark tergal markings are submedian, widest on the midline, and may occupy from the central 0.3 to all but the posterior 0.25 of each tergite. Long slender style.	Legs pale brown with the knees, apices of tibiae and tarsal segments, and apical tarsal segments brown.	Anterior wing veins light brown, vein r-m dark brown; posterior wing veins pale. Of the largest chironomids in North America. Generally a little smaller than C. entis.��Wing length 5.9 - 7.5mm
C. vancouveri	BC	Thorax light brown,	Light brown, but brownish middle spots on abdomen.	Light brown	Very similar to plumosus

18 of 118

Chironomus (Chironomus) complex riparius

Species	Range	Thorax	Abdomen	Legs	Wings
C. riparius	NWT - WY - SC - NY	Ground color pale to dark brown, thoracic markings red-brown to blackish brown	Abdomen brown to blackish, apical 0.25 of each tergite pruinose and pale.	Legs pale green to light brown towards their bases, tarsal segments darker	Wing length 3.7 - 3.8mm, anterior wing veins brown, vein r-m slightly darker; posterior wing veins unpigmented.
sp. f	Eastern Canada	Thorax yellow, with vittae brown.	Abdominal tergites dark brown, with just a narrow distal stripe on segments III-VII.	Femur and tibia yellowish, but with dark knees.	Wing length about 3.3mm
sp. 5l	Greenland	?	?	?	?
C . species julianhåb	Greenland	?	?	?	?
C. acidophilus	AK - SK	Antenna dark brown, ground color of thorax and scutellum yellowish; mesonotal stripes and postnotum dark brown.	Abdomen brown or dark brown. Genitalia similar to that of C.pseudothummi	Legs brown or dark brown.	Wing length 2.7-3mm
C. melanescens	SK - WI - Prince Edward Island	See image below	Abdominal tergites with basal brown bands, but extending further along the tergite in the more posterior segments. Terminalia similar to that of C. riparius	See Image below	Wing length 3.4 - 4.6mm
C . sp. parariparius	ON

C. parariparius

19 of 118

Chironomus (Chironomus) complex staegeri

Species	Range	Thorax	Abdomen	Legs	Wings
C. crassicaudatus	Widespread east	Head yellow; scape of antennae and base of flagellum yellowish, the remainder fuscous, plumes pale brown; palpi brownish yellow. Mesonotum with gray or brown vittae, the disc with faint whitish pruinescence; sternopleura reddish except on upper margin; postnotum brown.	Abdominal segments each with the basal half blackish brown, the dark color usually extending posteriorly on median line, or with a broad brown band on basal half which does not extend to the extreme base.��Genitalia large, heavy and unique.	Legs greenish yellow, knees, and apices of tibiae and of the tarsal joints narrowly brown.	Wing length 3.7-6mm
C. frommeri	CA, OR, QB	Ground color pale yellowish brown. thoracic markings dark brown,	Abdominal tergites with a dark central spot, particularly on segments 2 to 5.	Legs pale, some progressive darkening of tarsal segments. Fore tarsi with a sparse beard.	Wing length 3.6-5.7mm
C. staegeri	Widespread	Ground color light pruinose brown with greenish tinge, with dark brown markings.	Abdominal tergites I-VI with a submedian transverse dark band occupying 0.3 to 0.7 of the segment, tergite VII and anal segment completely dark.	Legs pale brown with apices of segments darker brown. Short beard on fore tarsi outer side.	Wing length 3.8-6.3mm
C . 'tigris'	MN - ON				Wing length about 5.5mm
C . sp. 5p.	Greenland	?	?	?	?

20 of 118

Chironomus (Chironomus) no/unknown complex 1

Species	Range	Thorax	Abdomen	Legs	Wings
C. nr. annularius	BC-IN-NB	Thorax greyish yellow, bands black or red-brown with more or less darker flecking.	Abdomen with most of seg I yellow brown, segs II-V darker, II-IV with anal border extended medially.	Legs with tarsi darkened.	Wing length 3.9 (abt 3.6-4.2) mm
C. athalassicus	Northwest	Coloration variable from pale to dark. Thorax with median tubercle as a low bump	Abdominal terga reddish brown with a thin dark basal band. The apical one third to one half of segments 7 and 8 pale. In higher salinities the colors become paler.	Anterior tarsi without beard, but occasional long setae up to 6 times the tarsal diameter.
C. stigmaterus 1823	Widespread	Pale greyish brown; lighter portions of thorax with a greenish tint, Frontal tubercles large, about 0.08 mm long and 1.7 times longer than width at base. Central portion of pronotum strongly produced, no mesonotal tubercle	abdomen brown, darker towards the apex and paler near the incisures	Legs with apex of the tibiae and basal tarsal segments brown; fore tarsi with long heavy beard	Wing veins stramineous; vein r-m dark brown
sp. z	ON	?	?	?	?
C. longistylus 1921	Arctic	Black
C . species 5t	MB, NL, Greenland	Thorax largely black but probably a pale haltere	Abdomen dark brown with narrow yellow band at posterior margin of tergites IV-VIII, terminalia dark	Black or dark brown	Anterior veins only slightly darkened Wing length 4.3 mm.
C . species 5h	Greenland	?	?	?	?
C . nr. stigmaterus		?	?	?	?
C. prior	AK	Dark
C. tardus	AK	Dark	Abdominal segments dark, but often pale on posterior margins	Fore leg with moderate beard
C. tenuistylus	WI, Norway, Finland	Black, with a dark SV	Anal point may be more slender than that of C. longistylus	Fore tarsi without beard	Wing length 4.58 - 5.5mm
C . species TE11	Western mid Canada	Some specimens in the BOLD database are almost completely dark brown-black, while others are much lighter	Abdominal tergites largely dark with a narrow yellowish band at posterior margin

TE11

C. nr. annularius

21 of 118

Chironomus (Chironomus) no/unknown complex 2

Species	Range	Thorax	Abdomen	Legs	WIngs
C . sp 4s nr. tenuistylus	WI	Brownish, Thorax with dark vittae	Abdominal tergites with brownish black band covering at least the anterior 2/3 of segment, whitish in posterior region.		Wing length about 3.8 mm
C. trabicola	AK, BC	Thorax almost black	Abdomen brown to dark brown, tergites uniformly colored	Legs unusual in that anterior femur is shorter than the anterior tibia. Anterior basitarsus with beard
C. vitellinus 1961	FL	Yellowish-green, Thorax of a yolky colour, dull with practically no pruinosity	Abdomen without dark markings but quite strongly pruinose (White) at incisures and on segments 5 and 7	Legs whitish especially on tibiae, tarsal segments black at joints, dark bands on the tarsi	Darkened cross veins of the wings, Wing length 2.64 (2.07-3.00) mm
C species algonquian	ON	?	?	?	?
C . species Obatanga	ON	?	?	?	?
C . sp. k	ON, NH	?	?	?	?
C . species Greiner Lake	Nunavut	?	?	?	?
C . sp. 3g	MN SD
C . species Anchorage	AK - NL	Relatively dark; thorax light brown, with dark vittae, scutellum and postnotum	abdomen with dark brown basal dark band, occupying about half of the segement, until about 3/4 on segments VI and VII.	Legs yellowish-brown with dark knees, becoming darker from base of Ta1 to Ta5
C . species Le1	AK	?	?	?	?
C . species NAII	ON	Thorax dark brown, vittae and postnotum black	Abdomen dark brown, with narrow anterior pale region on segment I, and a posterior pale band on segments II-VII, becoming wider on segment VII.	Anterior tibia paler basally, but becoming darker and femur and tarsi all darkened, no obvious beard; other legs all darkened.	Wings pale, but anterior veins slightly darkened, particularly at crossvein. Wing length about 4.75 mm.

22 of 118

Chironomus (Chironomus) no/unknown complex 3

Species	Range	Thorax	Abdomen	Legs	WIngs
C. acerbiphilus 1939	CA, WY	Coloration generally dark, thorax dark yellow grey; vittae, postnotum and metanotum dark, almost black; scutellum dark yellowish.	Abdominal tergites mostly blackish with a thin paler band distal on segments II-VI.	?	Wing length about 3.8 mm; wings clear unmarked, anterior veins darker.
C. striatipennis 1910	CA				Wing length 2.04-2.18 mm, Wing patterned.

23 of 118

C. (Chaetolabis)

Combination of leg, thorax, and abdomen color for these two species is unique, unlike other Chironominae in Nearctic.

C. atroviridis

C. ochreatus

	Range	Thorax	Legs	Genitalia
C. atroviridis	BC to ON & MA, s. to IA & VA	Lateral vittae usually strong, dark	Mostly green; fore basitarsus pale brown on apical .9	Superior volsella pointed, long
C. ochreatus	MI to QB & ME, s. to AR & FL	Lateral vittae usually brown	Mostly orange-brown; fore basitarsus entirely blackish-brown	Superior volsella rounded, short
C.

24 of 118

C. (Camptochironomus)

		Thorax	male terminalia
C. dilutus	Northern, NM	Green with darker vittae	Inferior volsella tapering to apex, curved
C. vockerothi	AB	Well-developed tubercle	Inferior volsella bulbous near apex, straight
C. pallidivittatus	Central to Eastern North	Pale with orange-brown vittae	Inferior volsella tapering, but thicker than dilutus
C. tentans	Alaska	Adult not described

Figures from chironomidae.net

C. dilutus

C. vockerothi

C. pallidivittatus

25 of 118

C. (Lobochironomus)

	Range	Thorax	Abdomen	Legs	Wing
C. dorsalis 1818	Widespread	Pale green. Pedicel and thoracic markings ochraceous; flagellum except base and palpus brown.	Abdominal tergites each with a central brown mark which covers all except its base and apex, the apical tergites entirely brown; genitalia brown.	tarsi mostly stramineous with most of the apical segments brown	Male wing length 3.2mm
C. montuosus		might not be in nearctic
C. pseudomendax	CA
C. storai 1954	CA				Wing length 3.30-3.92 mm.
C . species 4v		?	?	?	?
C . ?nr. austini	ON
C. austini 1970	FL, NC	Thorax light brown, mesonotal vittae, scutellum and sternum medium brown to ochraceous, postnotum almost black.	Abdomen medium brown, paler on posterior borders of seg ments IV-VI	Forelegs dark brown from middle of femora to apex; middle and hind legs darker toward apex. Fore tarsus apparently without beard	Halter knob not darkened; wing and veins brown, without macrotrichia, but appearing densely punctate. Male wing length 1.97mm

26 of 118

Demeijerea (dark species)

Shining black-brown thorax, apruinose
Reddish brown mid and hind legs
Fore legs usually black
Wing medially black infuscated, basally yellow

Widespread

Key p 137 in townes 1945 -> some to Demeijerea

		Thorax	Legs
D. brachialis	Widespread	Shining black	Front basitarsus basally yellow
D. atrimanus	Eastern	Shining black	Front basitarsus black

27 of 118

Demeijerea (green species)

Widespread

Key p 137 in townes 1945 -> some to Demeijerea

		Thorax	Abdomen	Legs	Wings
D. abruptus	Northeast	Green thorax mostly pale orange brown, shining, pronotum of rather uniform width except at the middle, where it is sharply notched, the corners at each side of the notch being angular		Fore tarsus with a long beard on the outer side; tarsi brownish towards their apices.	Anterior wing veins pale brown, halter knob greenish white.
D. obreptus	N.Y.	Green thorax mostly pale orange brown, shining, pronotum of rather uniform width except at the median notch, the corners at each side of the notch rounded		Tarsi brownish towards their apices
D. spinulatus	MB	Pale green with orange-brown vittae

28 of 118

Dicrotendipes

Green-brown , apruinose
Unpatterned wings
male terminalia necessary for ID

widespread

Species		Range	Thorax	Abdomen	Legs	Wing
D. hulberti 2016

29 of 118

Einfeldia

Green-brown, apruinose
Unpatterned wings

	Range	Thorax	Abdomen	Legs	Wing
E. pagana	BC - NY - Miss	Light pea green. Flagellus except at its base and palpus dark brown; pedicel and thoracic markings ochraceous, or sometimes brown or black. Female: The pedicel and thoracic markings are never darker than pale brown. Otherwise similar to the male except for the usual sexual differences	Genitalia light brown. The inflated style abruptly constricted near the apex and the broad anal point are distinctive	Legs green, brown towards their apices
Undescribed	GA
E. chelonia	Eastern	Pale green, Thorax ochraceous	Pale green	legs pale green, brown towards their apices.

30 of 118

Glyptotendipes

Grey-striped, pruinose
Distinctive longitudinal medial groove on tergites 3-6 (remnant of pupal scarring)
Females with infuscation around most veins, males with infuscation only around r-m
Tergites lacking distinct pale cuticular bands, sometimes with pale hairs on the posterior

Widespread

https://bugguide.net/node/view/1302753/bgpage

Subgenus	Abdomen	Frontal Tubercles	Flagellar Segments	Body coloration
G. (Caulochironomus)	Anterior median scar on T2-6
G. (Glyptotendipes)	Anterior median scar on T3-6
G. (Heynotendipes)	Anterior median scar on T3-6

31 of 118

Glyptotendipes (Glyptotendipes)

	Range	Thorax	Abdomen	Legs	Wing
G. testaceus				Black fore legs
G. paratestaceus				Black fore legs
G. barbipes
G. paripes
G. lobiferus
G. meridionalis
G. senilis
G. paulisensus

Lobiferus complex highlighted in green
Originally G. (Phytotendipes)

32 of 118

Glyptotendipes (Caulochironomus)

	Range	Thorax	Abdomen	Legs	Wing
G. dreisbachi
G. seminole

33 of 118

Glyptotendipes (Heynotendipes)

	Range	Thorax	Abdomen	Legs	Wing
G. chelonia syn G. amplus

Originally G. (Trichotendipes)

34 of 118

Glyptotendipes

Phytotendipes	Range	Legs	Fore tarsus	Other notes
G. testaceus	Southern US	Front femora yellow basally but otherwise fully black; mid and hind legs fully yellow	2nd segment longer than 3rd	Scar on T6 .7
G. paratestaceus	MB	as in G. testaceus	2nd and 3rd subequal	Scar on T6 .4
G. barbipes	Widespread	Yellow with dark joints	2nd segment shorter than 3rd (males) or equal (females); male fore tarsus with long dense beard
G. paripes	Widespread	Femora and tibia black with tarsi yellow	2nd segment longer than 3rd
G. lobiferus complex	Widespread	Various, but all legs are the same color	2nd segment longer than 3rd	2 described species (G. lobiferus and G. meridionalis) + 3 undescribed species

Subgenus	Abdomen	Frontal Tubercles	Flagellar Segments	Body coloration
G. (Phytotendipes)	Scar present on T2	Present	Not fused in female	Brown
G. (Glyptotendipes)	Scar absent on T2	Absent	Fused in female	Brown or pale green
G. (Caulochironomus)

35 of 118

Glyptotendipes

Glyptotendipes	Range	Thorax	Abdomen	Mid and Hind Tibia	Fore Tarsus	Pruinosity	Superior Appendage of genitalia
G. unacus	QC	Pale green stramineous	Pale Green stramineous	Spines absent	Bare	Light
G. senilis	Northeast	Stramineous to light brown	Pale Green; sometimes light brown	Spines present	Short Beard	Strong
G. amplus	NJ	Stramineous to light brown	Pale Green	Spines present	Bare	Strong
G. dreisbachi	MI	Brown with green stains	Blackish brown	Spines present	Bare	Strong	Stout
G. seminole	FL	Brown with green stains	Blackish brown	Spines present	Bare	Strong	Slender

36 of 118

Goeldichironomus

Mostly apruinose
Unpatterned wings

Six species per BG

		Thorax	Abdomen	Legs	Wings	Notes
G. carus	Southern	3 black spots on each side of thorax	Abdominal tergites 2 to 7 each with a more or less distinct central rhomboidal brown patch.	Male short beard
G. devineyae	Eastern?	Light brown, Deep median notch, Lateral vittae darker than medial.	Uniform dark brown	Brown. Fore tarsi not bearded	Tinted brown, viens brown, squama thick fringe of hair. Halteres light brown
G. holoprasinus	TX, FL, MD	Pale green with head, and thoracic vittae brown	Style with distinctive submucronate tip and very narrow anal point.��Male genitalia 133	Pale greenish. Apex of fore femur, apex and basal half of fore tibia, and tarsi, except the basal part of mid and hind tarsi, brown. Fore tarsi not bearded	R-m not darkened, wing veins light brown.	Small, Body slender
G. amazonicus	TX?
G. fluctans?	Amazon?
G. natans?
G. pictus	FL	3 black spots on each side of thorax. The middle spot is connected to the next spot by a bar. Postnotum anterior half black - brown.	T 2 - 4, 6 - 7 Central black diamond or round black spot.	Pale but darker on distal ends of Fe and Ti on P1?

37 of 118

Kiefferulus

Entirely green, apruinose, with light brown thoracic stripes
Unpatterned wings
Long inferior volsella
Pronotum uniformly narrowed towards the center, not produced or notched medially
Superior appendage horn-shaped, strongly curved, and without setae beyond its base; inferior appendage large, oval, broad, and flat.

Five species, two undescribed from Southeast

widespread

North of Virginia, only dux and pungens

K. modocensis in California

K. dux is widespread

		Body	male terminalia
K. dux	Widespread		Inferior volsella
K. pungens	DC to FL
K. modocensis	CA
undescribed spp.	NC to FL

38 of 118

Lipiniella

Northwest territories

39 of 118

Xenochironomus xenolabis

Light pea green apruinose
Scutum with orange stripes
Short, blunt anal point
Superior volsella half as wide as long
Related to Axarus

Widespread

40 of 118

Harnischia Group

Genus Beckidia

Genus Cladopelma

Genus Cryptochironomus

Genus Cryptotendipes

Genus Cyphomella

Genus Demicryptochironomus

Genus Gillotia

Genus Harnischia

Genus Kloosia

Genus Microchironomus

Genus Olecryptotendipes

Genus Parachironomus

Genus Paracladopelma

Genus Robackia

Genus Saetheria

41 of 118

Beckidia

	Range	Thorax	Abdomen	Legs
B. tethys	Widespread	Scapus yellowish, flagellomeres dark brown; ground color of thorax pale yellow, mesonotal strips and two-third of postnotum yellowish brown	Yellowish	Front leg brownish except for pale yellow femur; mid and hind legs with pale yellow femur and tibia, t1– 5 gradually darker toward apex

https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=e660fc72a3d29f010180427a6465fd5e39e912ba

42 of 118

Chernovskiia

Male genitalia like Paracladopelma and Beckidia. Differs in male genitalia inferior volsella not having distinct lobe.

	Range	Thorax	Abdomen	Legs

43 of 118

Cladopelma

Distinct in having elongate curved and usually partially constricted gonostylus, greatly reduced superior volsella and inferior volsella absent
some descriptions in TOWNES: NEARCTIC SPECIES OF TENDIPEDINI

	Range	Thorax	Abdomen	Legs
C. amachaerus 1945	Widespread
C. boydi 1962
C. collator 1945
C. edwardsi 1933	Widespread
C. galeator 1945
C. spectabilis 1945
C. viridula 1767

44 of 118

Cryptochironomus

Generally larger and heavier than other sister genera.
Disistyle of male fairly short and more or less angular at apex
Appendages small rounded and equal in size
Short, but distinct digitiform inferior volsella free from macrotrichia that is completely covered by the superior volsella

	Range	Thorax	Abdomen	Legs
C. scimitarus	Northeast	Head and thorax ochraceous. Flagellum except basal segment and palpus brown; leg	Abdomen greenish with the apical part more or less brown.	Ochraceous.
C. sorex
C. argus
C. blarina
C. beardi
C. stylifera
C. digitatus
C. parallelus
C. eminentia
C. ramus
C. taylorensis
C. parafulvus
C. ferringtoni
C. ponderosus
C. curryi
C. absum
C. conus
C. imitans
C. fulvus
C. dentatus

https://zookeys.pensoft.net/article/119225/

Ref. 1

45 of 118

Cryptotendipes

apical gonostylus distinctly notched on inner side
Mostly apruinose

Northern USA/Canada

	Range	Thorax	Abdomen	Legs
C. ariel
C. casuarius
C. darbyi
C. emorsus
C. pilicuspis
C. pseudotener

46 of 118

Cyphomella

	Range	Thorax	Abdomen	Legs
C. argentea
C. cornea
C. gibbera
C. grisea

47 of 118

Demicryptochironomus

Very difficult to separate from other genera

	Range	Thorax	Abdomen	Legs
D. vulneratus
D. cuneatus
D. fastigatus

48 of 118

Gillotia alboviridis

49 of 118

Harnischia

	Range	Thorax	Abdomen	Legs
H. curtilamellata	Northeast	Head and thorax ochraceous, Flagellum and palpus pale brown.	Pale green. Apical part of abdomen brown	Legs stramineous, brown toward the apices of the tarsi; fore tibia darker than the others.
H. incidata	OK	Thorax, mostly ochraceous. Pedicel, flagellum beyond its base, and mouthparts brown.	Pale green. Seventh and following segments tinged with pale brown.	Legs pale stramineous, brown toward the ape

Ref. 1

50 of 118

Kloosia

	Range	Thorax	Abdomen	Legs
K. dorsenna

51 of 118

Microchironomus nigrovittatus

Brownish, mostly apruinose

Northeastern USA/Canada

52 of 118

Parachironomus

Appendage 1 elongate, appendage 2 is a very small lobe or lacking.

	Range	Thorax	Abdomen	Legs	Wings
P. abortivus 1915	OR - NY	Pedicel, most of thorax and palpus ochraceous; flagellum except basal part infuscate	Pale green	Apical 0.1 of fore tibia brown; tarsi whitish, brown on the apical 0.12 of fore basitarsus, basal 0.1 and apical 0.25 of the second segment and all of the third segment of the fore tarsus, and all of the fourth and fifth tarsal segments. The white of the second segment of the fore tarsus is tinged with brown (rarely this segment is entirely brown), and the apical 0.1 to 0.25 of the second and third segments of the middle and hind tarsi are sometimes tinged with pale brown.
P. alatus
P. carinatus
P. chaetaolus
P. directus
P. elodeae 1945	NY	Pedicel light brown; thorax tinged with ochraceous; palpus and flagellum except base infuscate	Pale green	Tarsi whitish, marked with brown as follows: Apical 0.2 of fore basitarsus, third segment of fore tarsus, segments 4 and 5 of all tarsi, and apical 0.3 of third segment of middle and hind tarsi.
P. forceps 1945	MB, MN	Pedicel and thoracic markings brown to pale greenish ochraceous; flagellum and palpus light brown	Pale green, sometimes slightly infuscate	Legs stramineous brown to pale green, darker brown as follows: Apical 0.1 of fore tibia, apical 0.25 of first segment of fore tarsus and first three segments of middle and hind tarsi, and all of last two segments of fore tarsus and last three segments of middle and hind tarsi; second segment of fore tarsus whitish to pale brown, darker on its basal and apical 0.25.
P. frequens 1905	OR - NY	Pale green. Pedicel and most of thorax ochraceous; palpus and flagellum except its basal part infuscate	Pale green	Legs yellowish green, the apical 0.3 of fore tibia and extreme apices of middle and hind tibiae brown; tarsi white, brown on the apical 0.3 of fore basitarsus, basal 0.05 and apical 0.12 of second segment and all of third segment of fore tarsus, apical 0.1 to 0.3 of first to third segments of middle and hind tarsi, and all of the fourth and fifth tarsal segments
P. hirtalatus
P. monochromus
P. pectinatellae
P. potamogeti
P. schneideri
P. sublettei
P. tenuicaudatus
P. varus

53 of 118

Paracladopelma

Brownish, apruinose

widespread

Range	Thorax	Abdomen	Legs

54 of 118

Robackia

	Range	Thorax	Abdomen	Legs
D. vulneratus
D. cuneatus
D. fastigatus

55 of 118

Saetheria

	Range	Thorax	Abdomen	Legs
D. vulneratus
D. cuneatus
D. fastigatus

56 of 118

Polypedilum group

Genus Endochironomus

Genus Endotribelos

Genus Graceus

Genus Hyporhygma

Genus Phaenopsectra

Genus Polypedilum

Genus Sergentia

Genus Stictochironomus

Genus Synendotendipes

Genus Tribelos

57 of 118

Endochironomus

Green to brown, mostly apruinose
Unpatterned wings with no hair on membrane
Female antenna 6 flagellomeres
Male antenna 13 flagellomeres
Beard on front tarsus

Species	Range	Thorax	Abdomen	Legs	Wing
E. subtendens	Widespread	Pale whitish green; Thorax extensively marked with pale orange brown.	Green, slightly darkened near apices. Male genitalia 50	Male fore tarsus with long beard, brownish towards apices	Halteres and anterior wing veins whitish
E. nigricans	Widespread	Light to blackish brown	Pale green with apical part somewhat darkened. Male genitalia 49	Stramineous. Male fore tarsus with short beard	Halteres and anterior wing veins pale
E. oldenbergi	Arctic, Greenland, Siberia	Black	Black	Yellowish. Male fore tarsus with long beard,	Wing veins colorless except anterior veins brown. r-m not dark. Halteres pale
Undescribed	Waldo lake, Middle OR
Undescribed	Canadian arctic

Endochironomus Kieffer, Tribelos Townes, Synendotendipes, n. gen., and Endotribelos,

n. gen. (Diptera: Chironomidae) of the Nearctic Region

https://bugguide.net/node/view/2226028/bgimage

58 of 118

Endotribelos

	Range	Thorax	Abdomen	Legs	Wing
E. hesperium	CA, FL	Medium brown, scutellum paler, Female slightly darker	Medium brown, tergites 2-5 with caudal bands of paler brown Female slightly darker, Male genitalia 58	Stramineous to light brown. Fore legs generally darker. Front legs no beard,	Veins stramineous to light brown, Setae light brown. Medium to dark brown at apex.
Undescribed	CA	Brown	Caudal of tergites paler	Coxae brown	Anterior wing vein plae brown, r-m slightly dark,

Abdomen pruinose
Thorax more or less shining
Male front tarsus no beard

Chironomus lugens likely belongs here.

59 of 118

Graceus

Palpus shorter than head is wide
Wing membrane without setae

Undescribed North America species

60 of 118

Hyporhygma quadripunctatum

Brown, mostly apruinose
Pale, basally orange legs
Unpatterned hairless wings
Abdominal tergites 2-6 with a roughly square pattern of four shiny dots near the posterior
Palpus short
Male front tarsus with beard
Large species

Tibiae never with white bands

Lacks scutal tubercle.

Widespread

Have a almost velvety look to them.

https://bugguide.net/node/view/275673/bgimage

61 of 118

Phaenopsectra

Brown-black, mostly apruinose
Unpatterned wings
Male front tarsus usually without beard
Leg ratio usually more than 1
Wing membrane with setae

	Range	Thorax	Abdomen	Legs	Wing
P. dyari	Widespread	Blacker brown than flavipes, Flagellum brown	T1-5 laterally with a whitish translucent spot occupying the apical 0.3 of each; apical margin of T5,6 whitish; style and apical part of inferior appendage whitish. Female; Abdomen uniformly blackish brown with the apical margins of T1-6 pale brown and the terminalia whitish.	Legs except bases of coxae pale brown	Wing veins & hairs light brown; w; fork of Cu under or very slightly beyond r-m
P. flavipes	Widespread	Blackish brown, Flagellum and mouthparts pale brown	Style and apical part of inferior appendage whitish. Terminella whitish	Legs except bases of coxae stramineous to whitish	Veins and wing hairs pale brown to whitish; fork of Cu somewhat beyond r-m
P. mortensoni	CA
P. obediens	East of Rockies	Blackish brown, Flagellum light brown	Male; T1-4 with approximately the apical 0.15 above and 0.3 or more laterally whitish and translucent; apical margin of T5 & 6 light brown; style light or dark brown Female; blackish brown, T1-7 apical margins light brown. Basal segments often paler sometimes with small pale translucent lateral areas	Legs except bases of coxae whitish	Wing veins, halter & hairs white or very pale brown; Fork of Cu somewhat beyond r-m
P. pilicellata	CA
P. profusa	West of MT south to MX	Blackish brown	Apical 0.2 of T1-7 lighter brown, usually with a cinereous bloom, and on the sides faintly translucent; style usually lighter brown than the body.	Legs beyond coxae stramineous	Halter whitish; Wing veins, hairs light brown; Fork of Cu under or very slightly beyond r-m
P. punctipes	East of ID,	Polished black; palpus & mouth parts stramineous or pale brown	Male; Pale green, Abdominal incisures 2-4 not darkened in both sexs Female; Green color of the abdomen more or less darkened by infuscation	Legs except bases of coxae whitish	Wing veins and hairs pale brown to white, halter whitish; fork of Cu somewhat beyond r-m
P. vittata	Eastern	Polished Black; flagellum palpus & mouthparts dark brown	Male; Pale green; second to fourth incisures black, the fifth incisure dusky, and everything beyond the sixth segment except the style and apical part of the inferior appendage blackish brown��Female; Abdomen uniformly pale green, somewhat darkened by infuscation	Stramineous/light brown	Wing veins and hairs light brown; Halter whitish, fork of Cu somewhat beyond r-m

nomolosx, iNaturalist / CC BY-NC

62 of 118

Polypedilum

Key in Townes 1945 on page 37

Brown, mostly apruinose
Males often with notch between abdominal 7 & 8, only otherwise in Tanytarsini among Chironomidae
Unpatterned wings or with a few small spots
ONLY 2 Subgenera have species with spotted wings.

erikjohnson43, iNaturalist / CC BY-NC

P. nubifer invasive from Australia.

63 of 118

Group	Species
Acifer Group	1
Aegyptium Group	2
Alboguttatum Group	1
Floridense Group	2
Halterale Group	2
Labeculosum Group	1
Parascalaenum Group	1
Parvum Group	2
Pullum Group	4

Polypedilum TRIPODURA

The male imagines of the subgenus either have a broad and often club-shaped superior volsella without an apical projection, or trifid anal point or lateral teeth or shoulders to each side of the anal point or both. The wings often have dark markings and no setae on the wing membrane except for one Afrotropical and two Neotropical species. The anal point is often broad. The superior volsella is almost always covered with microtrichia and normally has setae on distal parts of the outer and inner margin.

Most ranges incomplete / old and outdated

parascalaenum

Similar, not in Tripodura

64 of 118

Polypedilum (Tripodura) Aegyptium Group

Species	Range	Thorax	Abdomen	Legs	Wing
P. griseopunctatum	Widespread	?	?	?	Wing of male with indistinct pale gray spots (fig. 212), often practically lacking. The wing figured is of an unusually well-marked male. Haltere knob blackish.��Female: Wing spots larger and darker than those of the male. Otherwise similar to the male except for the usual sexual differences
P. apicatum	NV, NM	Dark brown	Dark brown	Legs pale brown with the coxae and an apical annulus on each femur brown	With 4 distinct spots: 2 in cR5, 1 across Cu2, 1 in middle of anal area, fig 207. Veins light brown, Halter whitish.

65 of 118

Polypedilum (Tripodura) Floridense Group

Species	Range	Thorax	Abdomen	Legs	Wing
P. californicum
P. floridense	MO, MS, FL	Dark brown	Dark brown, The peculiar broad anal point and the apically narrowed appendages are distinctive.	Legs except coxae stramineous brown	Wing veins, and halter except knob stramineous brown, halter knob blackish

66 of 118

Polypedilum (Tripodura) Halterale Group

Species	Range	Thorax	Abdomen	Legs	Wing
P. halterale	East of Rockies	Dark brown	Dark brown	Legs except coxae stramineous	Halter except knob stramineous, wing marked with pale gray along the veins, more conspicuously so in the bases of cells R5 and Cul and along veins Cu2 and 2A; wing veins pale brown.
P. digitifer	Widespread	?	The shape of the superior appendage easily distinguishes this from closely related species	?	?
P. simulans	East of Rockies			This species is very similar to P. haltarale but is slightly larger, darker, and stouter, with a different leg ratio and genitalia

67 of 118

Polypedilum (Tripodura) Parvum Group

Species	Range	Thorax	Abdomen	Legs	Wing
P. pardus	TX, SC	Similar in color to P. parvum	Similar in color to P. parvum	Similar in color to P. parvum	Wing spotting is more definite and the pattern slightly different fig 210. Cell Cu1 has a small spot in its apex. In the two specimens before me the apex of the halter knob is dark.
P. parvum	Largely southern and western	Dark Brown	Style and inferior appendage pale brown.	Legs except coxae pale brown, the femora darker and with an indistinct subapical paler annulus	Halter whitish, the knob often blackish; wings rather indistinctly spotted with gray fig 209, the veins pale brown.��Although the wing pattern is rather similar to that of P. pardus the less definite spots and minor differences in pattern may be used to distinguish the two species

68 of 118

Polypedilum (Tripodura) Pullum Group

Species	Range	Thorax	Abdomen	Legs	Wing
P. isocerus	CA, NV	Dark brown, antennal ratio 0.9	Dark brown, style, and inferior appendage pale brown	Legs except coxae pale brown	Wings streaked with pale gray along the veins, more broadly and conspicuously so in the bases of cells R5 and Cu1 and along veins Cu2 and 2A. Wing veins pale brown This species is like P. albinodus except that it has a different antennal ratio and usually more gray on the wings
P. gomphus	MA, SC	Blackish brown	Blackish brown	Legs except coxae whitish	Wing and halter whitish
P. albinodus	ID, VA	Similar to P. isocerus, antennal ratio 1.5	Similar to P. isocerus	Similar to P. isocerus	Wings are without conspicuous gray markings and the veins whitish, However, the paratype from Virginia has the wings marked as in P. isocerus.
P. scalaenum	Widespread	Thorax dark brown with scutellum yellowish brown	Abdominal segments yellowish brown. Style yellowish white.	Legs brown with femur bearing yellow sub-apical ring	Veins pale, patterned fig 206, halter yellowish white.

69 of 118

Polypedilum (Tripodura) single species Groups in the Nearctic

Group	Species	Range	Thorax	Abdomen	Legs	Wing
acifer group	P. acifer	MI	Blackish brown. Flagellum and mouthparts light brown	Blackish brown	Legs stramineous, the apex of each femur and tibia brownish, style whitish	Wing veins light brown, halter whitish
Labeculosum Group	P. labeculosum	Southwest	Dark brown, Flagellum and mouthparts light brown	Dark brown	Legs except coxae pale brown, the apex of each femur and tibia with a small indistinct brown annulus	Wings marked with pale gray spots as in fig 211, the veins brownish; halter whitish.
Parascalaenum group	P. parascalaenum	FL	Head, thorax, scutelum yellow brown, thoracic vittae, sternum, pleural markings and postnotum blackish- brown	Brown	Legs dark brown, the femora with pale subapical ring, the tibiae with a pale basal ring	Wings with R1 and R2+3 distinctly separated at apex; conspicuously marked with gray. (Fig. 2)
alboguttatum group	P. pterospilus	Southern	Blackish brown	Style and inferior appendage pale brown; apical 0.16 of abdominal tergites and mottling on thorax cinereous	Femora brown with a narrow subapical stramineous annulus; tibiae with a faint subbasal brown annulus, the rest of the legs except the coxae brownish stramineous	Veins pale brown, Halter whitish, spotted fig 208

parascalaenum

70 of 118

Polypedilum POLYPEDILUM 1

	Range	Thorax	Abdomen	Legs	Wing
P. nubeculosum	Widespread	Blackish brown “Pronotum forming a distinct projection from the mesoscutum, stronger than in any other species of the genus”	Blackish brown	Legs byond coxae, and halter except the apical part paler brown than the body	R2+3 distinctly separated from R1, in this way differing from all other species of the subgenus except P. trigonus; end of R4+5 a little nearer than end of M to wing apex; fork of Cu slightly beyond r-m. Very pale gray spots, veins light brown
P. trigonus		Mesostemum, scutellum, top part of mesoscutum, inner half of pedicel, and head usually paler brown	Large triangular spot on each side of abdominal tergites 2 to 6 whitish, The base of each triangle being on the apical margin of the tergite �Female: Abdomen entirely dark brown.	Legs beyond coxae whitish	Tips of R1 and R2+3 distinctly separated, in this way differing from all other species of the subgenus except P. nubeculosum; ends of R4+5 and M about equidistant from the wing tip; fork of Cu beyond r-m��Wing, halter whitish.
P. laetum		Dark brown, Flagellum brown		Legs beyond coxae brown;	End of R4+5 a little nearer than end of M to the wing apex; fork of Cu very slightly beyond r-m; The veins pale brown; halter pale brown, its knob blackish brown. Wing spotted.
P. tuberculum

The male imagines of the subgenus can be distinguished by having no frontal tubercles, bare wing membrane, wing vein R2+3 usually relatively well separated from R1, projection of superior volsella long compared to the short base and nearly always with outer seta and anal point never trifid or with lateral teeth or shoulders to each side of the anal point

71 of 118

Polypedilum POLYPEDILUM 2

	Range	Thorax	Abdomen	Legs	Wing
P. angustum		Generally light. Haltere, pedicel, most of thorax, wing veins, and abdomen stramineous. Dorsal part of scutellum usually tinged with brown. Dorsal vittae usually, lateral vittae less often, tinged with light brown. Few darker specimens have generally brown thorax. Flagellum light brown to brown. Legs stramineous, apical l/6 of forefemw, foretibia and foretarsal segments l-4 often shade darker.
P. nigritum
P. illinoense		Whitish yellow. Flagellum brown; postnotum, lateral lobes of mesoscutum tinged with fuscous or brownish.	abdomen tinged more or less with pale green and with or without posterior margins of tergites 1 to 6 pale fuscous	Legs often tinged with fuscous or brown
P. ophioides		Pale yellowish whitish; flagellum brown.	Abdomen often tinged with green
P. braseniae		Yellowish white; flagellum brown.	Abdomen often tinged with green
P. cinctum

72 of 118

Polypedilum POLYPEDILUM like fallax

	Range	Thorax	Abdomen	Legs	Wing
P. vibex		Head and thorax blackish brown or dark brown; antenna, palpi brown;	Abdominal segments 1 to 5 greenish white to pale brown, with a brown subbasal cross band on segments 2 to 5. The brown cross bands are progressively broader towards the caudal segments, that of the second segment occupying about 0.25 of the segment's length and that of the fifth segment occupying about 0.4 of its length. Abdomen beyond the fifth segment blackish brown or dark brown, the style, appendages, and apical part of the sixth and seventh segments somewhat paler.��Female: Ground color of abdomen pale brown, instead of whitish to pale brown as in the male.	Legs stramineous, brownish towards their apices and on more or less of the coxae; front trochanter and base of front femur brown	Wing veins brown; halter white, the tip of the knob dark brown; end of R4+5 practically at the wing apex; fork of Cu distinctly beyond r-m.
P. artifer		Like P. fallax	Male, abdominal segments 1 to 5 white. Male genitalia similar to those of P. fallax (fig. 52) and of P. vibex (fig. 49)	Fore femur is entirely white	Like P. fallax
P. calopterus�-P. walleyi		Head and thorax brown, the mouthparts, flagellum, and scutellum pale brown	Male abdomen white slightly tinged with brown beyond the fifth segment; The slightly broader style is the only point of difference between the genitalia of this species and those of P. vibex (fig. 49), of P. fallax (fig. 52), and of other closely related species.	Legs whitish; middle and hind coxae and apices of tarsi pale brown; front coxa and trochanters brown; front femur with the basal 0.85 brownish and the apical 0.15 whitish	End of R4+5 near, and end of M distant from wing apex; fork of Cu distinctly beyond r-m. Wing with its base brown, the rest whitish and with pale veins; halter whitish. Female has wing band
P. fallax		Polished blackish brown, white as follows: Palpus and mouthparts more or less, face sometimes, flagellum (the base often tinged with brown),	Male, abdominal segments 1 to 5 white. Female: Usually only the basal two abdominal segments are whitish, the rest being more or less brown. Style and inferior appendage pale brown	White except for the apical tarsal segment, basal 0.8 of fore femur, and more or less of coxae, which parts are dark brown; basal 0.4 of fore femur light brown, sometimes whitish	Wing beyond squama and halter white. apical 0.65 of wing faintly infuscate;
P. fuscipenne / pedestre	Western	Similar to P. fallax.	Male, abdominal segments 1 to 5 white. Female: Abdomen blackish with the apical margin of the tergites and obscure lateral areas toward the base of the abdomen whitish.	Similar to P. fallax except fore femur has its apical 0.66 entirely dark brown and its basal 0.33 whitish.	Halter knob black

73 of 118

Polypedilum URESIPEDILUM

	Range	Thorax	Abdomen	Legs	Wing
P. convitum	.
P. obtusum	NY	Yellowish white. Flagellum brown	Abdomen more or less tinged with pale green. Male genitalia similar to those of P. aviceps (fig. 64) in the broad anal point, but distinguished by the broader inferior appendage and differently shaped superior appendage.
P. aviceps	NY, CA, ID, MT, NV	Yellowish white. Flagellum brown;	Abdomen tinged with pale green. Male genitalia Similar to those of P. obtusum (fig. 63) in the broad anal point, but distinguished by the narrow inferior appendage and differently shaped superior appendage.
P. flavum
P. sulaceps
P. cultellatum
P. pedatum

No spotted wings

74 of 118

	Range	Thorax	Abdomen	Legs	Wing
P. sordens	Eastern	Blackish brown	Apical 0.25 of abdominal tergites cinereous. The style is broader than in other Nearctic species of Pentapedilum.	Dark brown	Knob of halter black
P. tritum -P. albulum	Widespread	Brown, mesoscutum shining, only slightly pruinescent	Brown, abdomen somewhat darker at the incisures	Pale brown	Knob of halter black
P. epleri	KS, FL, OH	Freshly killed males with thorax and abdomen green to pale green. Preserved specimens with thorax pale brown to brown	Male genitalia 7, Distinct in having a simple superior volsella with strongly curved apex, with microtrichia confined to area around the inner setae, and with the lateral seta situated just below the median bend. Abdominal segments pale brown, with or without narrow darker apical bands; legs brown
P. albulum	NY	Small, Pale yellowish white	Pale yellowish white	Apex of each femur pale brown	The wing differs in having basal half wedge-shaped
P. intuber		Coloration pale brown with darker vittae, posterior anepisternum II, preepister num and postnotum.	Uniform Brown color, A	Legs brownish stramineous.	Haltere knob blackish brown.

Polypedilum PENTAPEDILUM

Distinguished by having setae on wing membrane, no spotted wings

75 of 118

Sergentia (Sergentia)

Species	Range	Thorax	Abdomen	Legs	Wing
S. coracina	Widespread north of Ohio, Oregon	Black	Black	Legs beyond coxae brown. Male with long dense beard on front tarsus	Cu fork beyond r-m. Anterior wing veins blackish, wing setae light brown. Halter blackish at base, white at knob.
S. albescens	West of CO	Blackish brown	T1-4 light brown with the apical half of the sides of each segment pale translucent brown, or darker brown with the pale lateral areas more or less obsolescent. Female: Colored like the male except that all but the apical tergites are brown with the apical 0.25 pale brown.	Leg beyond coxae light brown to stramineous. Male with moderately dense beard on front tarsus.	Cu fork very slightly beyond r-m. Wing veins and hairs light brown. Halter stramineous

Has setae on wings, but sparser than (Polypedilum, Phaenopsectra) and best found at wing apex
Large, dark, stocky.

TALOA1635-22

76 of 118

Stictochironomus

For “typical” species:

Rm vein infuscated
Hind tibia with a dark ring at its midpoint
Thorax dark in coloration
Abdominal segments dark with white apex

For “atypical” species (S. albicrus, S. devinctus, S. palliatus)

Rm vein not infuscated, wings pale white with white veins
hind tibia without a dark ring
Thorax red (in palliatus) or dark
Abdominal segments dark (in palliatus) or with white apices

In the high arctic, S. unguiciliatus has an infuscated rm vein and dark hind tibia, with dark abdominal segments

Widespread

rbcl_guy, iNaturalist / CC BY-NC

77 of 118

Stictochironomus

	Range	Wings	Thorax	Abdomen	Legs
S. palliatus	Eastern	Without a spot on r-m vein, entirely hyaline	Mesoscutum red-brown	Abdominal tergites uniformly dark	Legs brown except for basal .3 of mid tibia and basal 0.6 of femora
S. albicrus	KS, IL	Without a spot on r-m vein, entirely hyaline	Mesoscutum blackish-grey	Abdominal tergites dark, with T1-4 lighter at apex	All tibia entirely white
S. devinctus	Eastern	Without a spot on r-m vein, entirely hyaline	Mesoscutum blackish-grey	Abdominal tergites dark, with T1-4 lighter at apex	Middle and hind tibia dark at base and apex, without annulus on hind tibia
S. unguicilatus	NT	Dark spot over r-m only	Mesoscutum black	Abdominal tergites black	Tibiae uniformly dark brown
S. naevus	NM	Dark spot over r-m vein; 4 additional distinct dark spots, including one in cell R5	As in S. annulicrus	As in S. annulicrus	Tibiae banded with dark brown and white; all tibiae with dark annulus
S. marmoreus	MO, NY, SD, SK	Dark spot over r-m; additional faint markings present	Mesoscutum pale grey with hairs behind the central tubercle	As in S. annulicrus	Tibiae banded with dark brown and white; hind tibia with dark annulus; middle tibia without central dark annulus
S. quagga	CA	Dark spot over r-m; additional faint markings present	Mesoscutum blackish grey without hairs behind central tubercle	As in S. annulicrus	Tibiae banded with dark brown and white; hind tibia with dark annulus; middle tibia with central dark annulus
S. varius	Northeastern to CO	Dark spot over r-m only; halter knob fuscous	As in S. annulicrus	As in S. annulicrus	Tibiae banded with dark brown and white; hind tibia with dark annulus; long beard on fore tarsus
S. annulicrus	NY, ON	Dark spot over r-m only; halter knob white	Thorax blackish brown with strong grey pruinosity	Abdominal tergites dark, with apical 0.3 of T1-6 and apical margin of T7 pruinose white	Tibiae banded with dark brown and white; hind tibia with dark annulus; short beard on fore tarsus
S. lutosus	MA	Dark spot over r-m only; halter knob white; fork of cu at or after where r-m joins M	As in S. annulicrus	As in S. annulicrus	Tibiae banded with dark brown and white; hind tibia with dark annulus; mid tibia with dark annulus; fore tarsus without a beard
S. virgatus	MT	Dark spot over r-m only; halter knob white; fork of cu before where r-m joins M	As in S. annulicrus	As in S. annulicrus	Tibiae banded with dark brown and white; hind tibia with dark annulus; mid tibia with dark annulus faint or absent; fore tarsus without a beard

78 of 118

Stictochironomus

	Range	Wings	Thorax	Abdomen	Legs
S. flavicingula	ON
S. pictulus	PA
S. rosenschoeldi	NWT, SK, PA
S. sticticus	High Northwest North America

79 of 118

Synendotendipes luski

All black�Beardless�No wing macrotrichia

80 of 118

Tribelos

Thorax more or less shining, abdomen pruinose
Unpatterned wings
No front leg beard
See Endotribelos also

Species	Range	Thorax	Abdomen	Legs	Wing
T. subatrum	Northern CA	Dark brown - black	Dark brown - black, Male genitalia 55	Light to dark brown, coxae darker and similar to body color	Anterior wing veins & setae stramineous to brown. Halter stramineous to brown.
T. subletteorum	Northern CA	Black	Black, Male genitalia 56	Black except base of front femur brown	Anterior veins blackish brown, posterior veins and membrane slightly infuscated. Halteres blackish brown becoming paler brown apically.
T. atrum	Eastern North America	Dark brown - black	Dark brown - black, Male genitalia 54	Light to dark brown, coxae darker and similar to body color	Anterior wing veins & setae brown. Halter stramineous to brown.
T. jucundum	Temperate North America	Pale brick red to blackish brown, Paler individuals with scutum laterally and postnotum dark testaceous or brown	Blackish brown, T1-6 basal areas stramineous or pale brown mottled with black. Variable may be absent in darker individuals, Male genitalia 52	Whitish or stramineous to blackish brown. Coxae & femora mostly darker than tibiae.	Anterior wing veins and haltere whitish to pale brown.
T. fuscicorne	TX - MN to East	Brown	Medium brown with broad apical bands of paler brown. Male genitalia 53	Stramineous to brown with coxae sometimes darker.	Anterior wing veins, setae, halteres stramineous or brown, Haltere darker towards apex,
T. undescribed	Southern Indian Lake Manitoba		Male genitalia 57

81 of 118

Lauterborniella Group

Genus Apedilum

Genus Kribiodorum

Genus Lauterborniella

Genus Microtendipes

Genus Omisus

Genus Paratendipes

Genus Zavreliella

82 of 118

Apedilum

Thorax brownish to black mostly apruinose
Nearctic Manual as Paralauterborniella
Wings sometimes patterned, sometimes unpatterned

widespread

		Thorax	Halter knob	Legs	Wings
A. nigrohalterale	widespread	Black	black	Blackish
A. elachistus	GA to TX	Brownish	Pale	Pale brown	Faint but definite spots
A. subcinctum	AZ, NV, CA	brownish	Pale	Pale brown	Uniformly pale

Can confuse with Polypedilum apicatum

83 of 118

Fissimentum

Range	Thorax	Abdomen	Legs	Wings

84 of 118

Lauterborniella

	Range	Thorax	Abdomen	Legs	Wings
L. agrayloides	East	Blackish brown, flagellum brownish white	Style and inferior appendage white	Legs beyond coxae white	Wings, halter white

85 of 118

Kribiodorum perpulchrum

Brown, mostly apruinose
Wings variously patterned

East of rockies

From Townes 1945 (as Lauterborniella):		Body	legs	wings
K. perpulchrum	Eastern USA/Canada	Brown	White, strong brown markings	Strongly brown-mottled

86 of 118

Microtendipes

Dd, mostly apruinose
Unpatterned wings
Male front femur backward dancing hair (unique for tribe)
widespread

	Range	Thorax	Abdomen	Legs
M. caelum	Northeastern USA/Canada	Pale straw-colored	Very pale green	Uniformly pale
M. caducus	Northern USA/Canada	Brown to black	Pale green, terminal segments sometimes darkened.	Profemur apical 0.12 brown, otherwise pale
M. pedellus	Northern USA/Canada	Brown to black	5 basal tegites pale green or somewhat infuscate	Profemur apical 0.3, or 0.12 and band at 0.3, brown, otherwise straminous, occasionally all dark brown for dark specimens
M. anticus	TX
undescribed spp.	Southeast

87 of 118

Omisus

Shiny black-brown, apruinose
Whitish tarsi
Unpatterned wings
Squamal fringe

Eastern USA/Canada

	Range	Body	legs	wings
O. pica	New England?	Shiny blackish brown	Bases of femora yellow, tarsi whitish,	Halter and wing veins brown.
O. browni

88 of 118

Pagastiella

	Range	Thorax	Abdomen	Legs	Wings
P. ostansa	N.W.T., B.C. to Ont., N.H., N.C., S.C.	Pronotum pale yellow to fuscous brown, widely separated medially. Mesonotum greenish to fuscous brown, vittae and postnotum fuscous brown. Scutellum whitish green to brown. 38	Abdomen greenish to dark brown, terminalia pale yellow to pale brown,	Legs whitish yellow	Wing bare, halter white, 37
P. orophila

New Species of Chironomids from Costello Lake, Ontario (Diptera: Chironomidae) on JSTOR

89 of 118

Paratendipes

Brown to black, mostly apruinose
Unpatterned wings
P. thermophilus has slight wing pattern

Widespread

tmurray74, iNaturalist / CC BY-NC

		Thorax	Front legs	Middle and hind legs
P. albimanus	Widespread	Shining jet black	Dark except for pale basitarsus	Yellow tibiae + tarsi, dark femora
P. fuscitibia	Southwest	Shining jet black	Dark except for pale basitarsus	Entirely dark, with subapically light basitarsus
P. nitidulus	Midatlantic	Shining jet black	Front basitarsus entirely black	Yellow tibiae + tarsi, dark femora
P. duplicatus	Northeast	Definitely pruinose black-brown	Femora dark brown; tibiae + tarsi lighter brown	Femora, tibiae dark brown
P. basidens	Widespread	Strongly pruinose black-brown	Femora straw-colored, brown apical tarsus	Entirely straw-colored, brown apical tarsus
P. subaequalis	Northeast	Black, somewhat pruinose	Femora Blackish brown	Femora dark brown, tibiae + tarsi lighter brown
P. thermophilus	AZ	Strongly pruinose, blackish-brown.	Femora light brown	Femora light brown
P. subletteus			protarsomere 1 pale basally and darkening to light brown apically
P. nigrimanus
P. alpinus

90 of 118

Zavreliella marmorata

Brown, pruinose thorax
lightly mottled wings
Legs mostly pale, but protibial brown and profemur apically swollen and brown

widespread

91 of 118

Stenochironomus Group

Stenochironomus

Xestochironomus

92 of 118

Stenochironomus

Greenish, mostly apruinose thorax
Legs usually held to the sides
Many species with transversely banded wings (unique)

widespread

Banded wing	Range	Thorax	Legs	Wings
S. albipalpus	Mid Atlantic	Lateral vittae only dark on posterior half, in isolated semicircle; postnotum diffusely dark on posterior half	Knees of fore and hind legs widely black; hind tibia also with apical .25 black	Apical band extending to cua₁, leaving a hyaline triangle with the point at the posterior
S. hilaris	Widespread, not on Pacific Coast of US	Scutum entirely green or with lateral vittae dark interiorly; postnotum green to mostly dark, with a green U-shape	Fore and hind femora and tibiae yellow to femora with apical .7 black and tibiae entirely black	Apical band extending to cua₁, leaving a hyaline triangle with the point at the posterior
S. fuscipatellus	NV/CA to BC	Lateral vittae narrowly dark interiorly; posterior half of postnotum dark	Fore and hind femora and tibiae yellow?�	Apical band extending to cua₁, leaving a hyaline triangle with the point at the posterior
S. annettae	Southern TX	Lateral vittae dark anteriorly; postnotum almost entirely dark	Fore and hind femora with apical .6 black; fore tibia with apical .3 black, hind tibia entirely black	Apical band restricted to apex
S. colei	CA to BC to ID, CO	Scutum entirely green or with dark lateral vittae; postnotum dark	Knees of fore and hind legs weakly infuscated	Apical band basically absent, longitudinal veins entirely yellow except over median band
S. pulchripennis	Northeast	Lateral vittae entirely or only posteriorly dark; postnotum at least mostly dark	Knees of fore and hind legs weakly infuscated	Apical band rounded anteriorly, weak
S. poecilopterus	East, CO	Lateral vittae postero-medially dark; median vittae with posterior dark spot; postnotum dark	Male with entire fore femur pigmented and with extreme base and subapical annulus pale; female with subapical annulus 0.05-0.11 of total fore femur length	Apical band formed into a triangle, usually connecting to median band
S. woodi	Northeast	Lateral vittae postero-medially dark; postnotum dark	Male with apical 0.15-0.23 of fore femur pigmented; female with subapical annulus 0.20-0.50 of total fore femur length	Apical band rounded anteriorly, weak

93 of 118

Stenochironomus

Plain wing	Range	Thorax	Legs	Eyes
S. macateei	MB and QC to FL, TX	Lacking dark pigmentation	Dark pigmentation absent except for all fifth tarsomeres which, in some specimens, are pale brown	Non-metallic, Male antenna all pale
S. unictus	Southern QC to FL	Posterior half of postnotum slightly darkened in some specimens; otherwise, dark pigmentation lacking	Lacking dark pigmentation except on fifth tarsomeres of all legs	Non-metallic, Male antenna apical dark
S. cinctus	Southern QC and ON to FL	Median vitta pale to tan; lateral vitta tan with darker markings along lateral edge; dark markings on less than posterior half of postnotum	Apices of all femurs dark; fore tibia dark, rarely with pale medial annulus	Metallic
S. aestivalis	NJ to FL	Median vitta tan; lateral vitta tan with darker markings along lateral edge; dark markings extending to or nearly to anteroventral margin of postnotum	Apices of all femurs dark; fore tibia dark with pale medial annulus	Metallic
S. totifuscus	CA, AZ	Marked pilosity on scutum between lateral and median vitta; stripe along lateral edge of lateral vitta	Apices of femur and tibia dark	Non-metallic
S. browni	FL	Medium dark brown; lateral and median vitta dark; postnotum entirely dark	Fore femur with subapical light brown annulus; remainder of legs uniformly medium brown	Metallic
S. niger	AZ	Completely pigmented, dark brown	All legs pale brown with medium brown pigmentation	Non-metallic
S. bisetosus	AZ	Dorsum of thorax light brown, median and lateral vitta, and dorsal portion of postalar callus, darker; scutellum light brown; entire postnotum brown	All segments medium brown; fore femur dark brown except with extreme base lightened; entire fore tibia and tarsus, and mid and hind tibia dark brown	Non-metallic
S. maculatus	Western TX, NM	Posterior portion of median vitta dark; lateral vitta dark; posterior ¾ of postnotum pigmented	All legs light to medium brown; basal 1/3 of fore femur lightened	Non-metallic

94 of 118

S. albipalpus

S. hilaris

S. fuscipatellas

S. poecilopterus

S. pulchripennis

S. woodi

95 of 118

Xestochironomus

	Range	Thorax	Abdomen	Legs	Wings
X. subletti	NM - FL, SC	Lacking dark pigmentation. Antennal hairs pale brown; palpus pale. Female: only Nearctic species without pigmentation on thorax and abdomen�	Male: thorax and abdomen with no dark pigmentation; gonostylus with simple, tapering apex, anal point with markedly bulbous apex. Male Genitalia A.	A.	Lacking dark pigmentation.
X. brunneus	NM, TX	Pale to dark brown. Antennal hairs dark brown; palpus pale brown. Female: only Nearctic species with pigmentation on thorax and abdomen��See A.	Abdomen with pigmentation on tergites Male genitalia B.	Apical 0.21-0.41 of fore femur, entire fore tibia and tarsus dark brown; apex of mid femur, entire mid tibia and tarsus medium brown; apical 0.14-0.54 of hind femur, and entire hind tibia and tarsus medium brown.�See B.	Entire membrane somewhat smokey, Lacking dark pigmentation.

Male, X. brunneus

Eyes not metallic
Forelegs held backwards in life.

96 of 118

Unknown Group Placement

ACALCARELLA��

97 of 118

Nilothauma

Thorax yellowish brown, ?pruinosity?
In Townes 1945 as Kribioxenus

Eastern USA/Canada

		Head+thorax	Abdomen	Legs
N. babiyi	Eastern USA/Canada	Yellowish brown, light green markings	Dark green to brown	straw-brown
N. mirabilis	NY	Yellowish brown, light green markings	Dark brownish green	straw-brown
N. bicornis	SC	Yellowish brown, extensive green markings	Dark green	straw-brown

Xiaolong Lin, College of Life Sciences, Nankai University CC-BY-NC-SA

98 of 118

Beardius

Eye iridescent
Fore tibia with long spur
Male genitalia lacking anal point

	Range	Thorax	Abdomen	Legs	Wings
B. reissi
B. truncatus
B. breviculus	South USA

99 of 118

Pseudochironomini

Pseudochironomus�Manoa

100 of 118

Manoa pahayokeensis

https://www.researchgate.net/publication/272570645_A_New_Species_of_Manoa_DipteraChironomidae_from_Everglades_National_Park

101 of 118

Pseudochironomus

Mostly apruinose
Crossvein r-m oblique to vein R4+5 base
Male eyes weakly extending medially dorsal to antennal base
Fore tibia apically with black spur
M vein apex closer to wingtip than R4+5 apex
Short front basitarsus, subequal to front tibia
Unpatterned wings

Widespread

Notes tentative from Townes 1945		thorax	Abdomen
P. crassus	N Canada	Robust, green, black markings	greenish
P. richardsoni	widespread	Robust, blackish, black markings	blackish
P. middlekauffi	Northeast USA	Less robust, pale green, black-marked	dark green
P. fulviventris	Eastern USA/Canada	Less robust, orange to pale green, no black markings	Brown transverse band on each tergite
P. pseudoviridis	CO to IL	Less robust, pale orange, no black markings	Uniformly pale green
P. anas	NY	Less robust, light green, orange-brown markings	Uniformly pale
P. banksi	Northeast USA	Less robust, orange, no black markings	Uniformly pale green
P. chen	MD	Less robust, orange, no black markings	Uniformly pale green
P. aix	MI	Less robust, light orange, no black markings	Uniformly pale green
P. netta	Northeast USA/Canada	Less robust, pale green to orange no black markings	Uniformly pale green to orange

102 of 118

Pseudochironomus Images

103 of 118

Tanytarsini

Corynocera – northwestern Canada
Lenziella cruscula - SD
Zavrelia – northeastern USA/Canada
Micropsectra - widespread
Stempellina – northern USA/Canada
Rheotanytarsus – northern USA/Canada
Lauterbornia – far north
Paratanytarsus - Canada
Cladotanytarsus – Canada and eastern USA
Tanytarsus – widespread

Crossvein r-m nearly parallel, continuous to vein R4+5 base (except in Corynocera, which has truncate wing)
Wing at least apically macrotrichiate
Males often with notch between abdominal 7 & 8, only otherwise in Polypedilum among Chironomidae

104 of 118

Corynocera

Reduced wing, mid and hind legs, and antenna.
Very distinct

Northwestern Canada

105 of 118

Lenziella cruscula

South Dakota

106 of 118

Zavrelia

Northeastern USA/Canada

107 of 118

Micropsectra

widespread

108 of 118

Stempellina

Northern USA/Canada

109 of 118

Rheotanytarsus

Northern USA/Canada

110 of 118

Lauterbornia

Far north

111 of 118

Paratanytarsus

Canada

112 of 118

Cladotanytarsus

Branched median volsella

Canada and eastern USA

NTNU University Museum, Department of Natural History. CC-BY-NC-SA

113 of 118

Tanytarsus

Kestiy in Townes 1945 p. 64

Mostly apruinose, often greenish
Unpatterned wings

widespread

114 of 118

References

Sources for this entire project include:

Special thanks to the work of John F. Carr with this group on BugGuide.net.

115 of 118

References

Other sources include:

Townes, 1945. The Nearctic Species of Tendipedini. The American Midland Naturalist. 34(1): 1-206.
Roback, 1962. The Genus Xenochironomus (Diptera: Tendipedidae) Kieffer, Taxonomy and Immature Stages. Transactions of the American Entomological Society.
Epler, 2001. Identification Manual for the larval Chironomidae (Diptera) of North and South Carolina.
Borkent, 1984. The systematics and phylogeny of Xestochironomus, Harrisius and Holarctic and Neotropical Stenochironomus.

116 of 118

https://flmnhbulletin.com/index.php/flmnh/article/view/flmnh-vol13-no5/vol13-no5��Beckidia�https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=e660fc72a3d29f010180427a6465fd5e39e912ba��

117 of 118

G. devineyae

Wing 1.6 mm. long; A.R. 1.0; L.R. 1.7 (paratype, foretarsi are missing

on the holotype). Palpal segments very short, only 11/2 times as long as

wide, in proportion of 6:10:10:12; frontal tubercles absent; pronotum dis-

tinctly projecting medially, with deep median notch.

Thorax light brown; mesonotal vittae, postnotum, scutellum, sternum

and small pleural markings blackish brown, the lateral vittae darker than

the median ones. D.L. in single row, bistles far apart; P.A. bristles 4-5;

D.M. in a double row; scutellum with transverse row of 6-7 large bristles;

halters light brown; legs brown.

Abdomen uniformly dark brown. Wing tinged with brown, the veins

brown; fork of Cu well beyond r-m; C and R-+ curving posteriorly to end

at wing apex; ends of R2+1: and R, distinctly separated; squama with long

thick fringe of hairs.

Foretibia with inner apical low rounded scale; combs of middle and hind

tibiae close, but with a distinct notch between, each with a strong spine;

pulvilli conspicuous; foretarsi not bearded.

Genitalia: (Fig. 1) Genitalia conspicuous, more thickened dorso-ven-

trally than usual. Style long and slender, curved inward, narrowing to a

point. Anal point black, broader at tip; inferior appendage slender, some-

what club-shaped; superior appendage brown, long, curved, pointed at apex,

with only microtrichia near the base.

FEMALE: unknown.

https://www.jstor.org/stable/3492971?searchText=Nilodorum+devineyae&searchUri=%2Faction%2FdoBasicSearch%3FQuery%3DNilodorum%2Bdevineyae%26so%3Drel&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&refreqid=fastly-default%3A6ce01c4ac559af486b9bcd822dbaf81a&seq=2