Was in BOLD Bin: BOLD:AAW4003
but BOLD operators have amalgamated it with the Bin containing C. bifurcatus: BOLD:AAG5453, probably because of the confusion caused by short sequences, although the distance graph shows two peaks.
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Some additional information can be provided from other males from the same egg mass, and from a male from a photograph in the BOLD database:
Coloration much as C. bifurcatus, but knees and anterior tarsi darkened.
Basal dark band at anterior of abdominal tergites, broader at mid-line and becoming more extensive until segs. VI-IX are almost completely dark.
Wing length 2.78-3.8 mm, width 0.68-0.9 mm, VR 0.98-1.03; 3-4 SCf on brachiolum, about 19-34 setae on squamal fringe.
Head: AR 3.14-3.5; cephalic tubercles 35-45 µm long and about 1.8-3.5 times longer than wide; seta not visible. Palp proportions (micron) 75 : 51 : 173 : 210 : abt 265. Clypeus about 0.5-0.7 of the width of the antennal pedicel, with 28-32 setae.
Thoracic setae: Acrostichal 10-16; dorsolateral 21-28 beginning at anterior end of lateral vittae; prealar 6-7; Supra-alar 1; Scutellar 11 in 2 approximate anterior rows, 14, mostly larger, in posterior row.Approximate leg proportions (micron):
BR 1.7-2.0
About 7-8 setae in a single patch on TIX. Superior volsella closest to E(g) of Strenzke (1959); IVo with simple setae, reaching to about the middle of the gonostylus which tapers noticably over posterior third.
Female
Coloration essentially as in the male.
Wing length about 3.48-4.1 mm, width abt 1.02 mm; VR 1.08; abt 21 setae on squamal fringe; 3-4 SCf on brachiolum.
Antennal proportions (micron) 190 : 120 : 125 : 115 : 185; AR - 0.34; A5/A1 - 0.97. Cephalic tubules about 28-32 µm long and about 1.4-1.6 times longer than wide. Clypeus about twice the width of the antennal pedicel, about 39 clypelal setae.
Palpal proportions (micron) 65 : 50 : 190 : 230 : 310.
Thoracic setae: Acrostichal 17; Dorsocentral 35; Prealar 6; Supraalar 1: Scutellar 15 scattered anteriorly, 14 in posterior row.
Approximate leg proportions (micron):
BR about 1.82
Pupa, Fourth instar larva and Cytology - Go to C. 'proulxi' immatures.
Found: British Columbia – North Pender Island, Gulf Islands N.P. (48.781°N, 123.301°W)(BOLD); Kelowna C.S., Kelowna
(49.863°N, 119.454°W)(BOLD).
New Brunswick – Kouchebouguac National Park (46.50°N, 65.33°W).
Ontario – abt 5 km NE Bobcayeon, Kawartha (44.57°N, 78.5°W) (BOLD); Brockville (44.589°N, 75.689°W)(BOLD); A.B.Lucas SS
(43.033°N, 81.248°W) London (BOLD); 4 ml e. Sudbury (46.52°N, 80.90°W); Sudbury area (Proulx et al.);
McFarlane L. (46.42°N, 80.95°W), and Tilton L. (46.35°N, 81.07°W), Peterborough (44.271°N, 78.394°W)(BOLD).
Prince Edward Island – Bubbling Springs Trail PEI Nat. Pk. (46.411°N, 63.093°W)(BOLD).
Quebec – L. St. Joseph (46.88°N, 71.63°W); L.Kinojévis (48.13°N, 78.90°W) (Proulx et al.).
Saskatchewan – Grasslands Nat. Pk. (49.001°N, 106.557°W); Prince Albert Nat. Pk., (53.85°N, 106.078°W)(both BOLD).
Arizona – at 2033 m Kaibab National Forest (35.939°N, 112.121°W)(BOLD).
Oregon – Rolling Riffle Creek, e. Dexter, Lane Co. (43.90°N, 122.8°W).
Tennessee – 10-Mile Creek, nr. Knoxville, Knox Co. (35.90°N, 84.07°W).
Wisconsin – Arboretum (43.03°N, 89.42°W) and University Houses (43.07°N, 89.42°W), Madison, Dane Co.
Molecular sequences:
MtCOI: This species can be separated from the closely related C. bifircatus at the molecular level on the basis of consistent differences at 10 base pairs:
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Pools and creeks.