Chironomus species 8TE,

from BOLD Database

The current identity of this species is unknown - it may be one of the previously named Arctic species, of which there are a few possibilities such as C. biseta.

In BOLD Bin: BOLD:AAC0595

Adult:

Some characters of the adult males can be determined from photographs in the BOLD Database:
Male:  Color dark blackish-brown, abdomen with a thin pale stripe at the posterior margin of segments II-VII; legs apparently paler, knees slightly darkened.


Adult male of C. sp.8TE from Greenland (BOLD Database)

AR about 3.
Wing length about 5.38-5.43 mm, width about 1.1 mm, VR about 1.0.
Palps pale, segment lengths (segs. 2-5) (micron) 114 : 400 : 315 : 485.
Legs with a weak beard.  Approximate proportions (micron):

 
Fe
Ti
Ta1
Ta2
Ta3
PI
1665
1765
2600
1170
750
PII
1715
1590
950
570
240
PIII
2140
2460
1715
945
600
 
Ta4
Ta5
LR
F/T
BR
PI
645
265
1.48
11.07
low
PII
490
280
0.65-0.70
1.05
 
PIII
490
245
0.65-0.70
abt 0.8
 

Pupa: Not known.

Larva:  The larva from Manitoba is either a thummi- or plumosus-type larva, but this does not mean that this is the case for Greenland larvae, as no such larval type is currently known there.


Larva of C. sp. 8TE from Manitoba, Canada (BOLD Database)

Larval head capsule is relatively dark, with gula darker.  Presence of lateral projections could not be determined; ventral tubules long, and posterior pair coiled.  Anal tubules appear to be relatively long and possibly with a constriction in the middle.

Cytology:  Not known

Molecular sequence:
mtCOI: There is sequence in the BOLD Database.

Found: Manitoba - nr. Churchill (58.738°N, 93.819°W) (BOLD)
            Greenland - Lake Tasersuaq, Kitaa, Kujalleq (60.2643°N 44.5389°W); Narsarsuaq, Kujalleq (61.1556°N, 45.3785°W) (both BOLD).

See also C. sp. 5j

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Created: 7 September 2018
Access: Unrestricted
Copyright © 2018, Jon Martin.