Oriental Chironomus: C. mongolgeheus

Chironomus mongolgeheus Sasa & Suzuki 1997

Adult

Male: Body color largely brown. Ground color of scutum yellow, vittae and postnotum brown; scutellum yellow. Femora and tibiae uniformly yellow but yellow in middle; tarsi I - III largely yellow with an apical dark ring; IV yellow on basal half and brown distal half; V brown. Abdominal tergites almost uniformly brownish yellow.
Body length 10.35 (9.96-11.12) mm.; wing length 4.87 (4.80-5.02) mm.; AR 4.74 (4.45-5.41); VR 1.08 (1.05-1.11) or 0.92 (0.89-0.95).
Anterior legs with beard, BR 5.8 (4.3-7.3);
fLR 1.32 (1.26-1.37)(relatively low); mLR 0.58 (0.57-0.59); hLR 0.70 (0.68-0.71).

Antenna and terminalia of C. mongolgeheus from Sasa and Suzuki (1997)

TIX with about 9 medial setae.
Anal point long and narrow, slightly constricted in the middle and darkened; Superior volsella of the E-type of Strenzke (1959); Inferior volsella reaching about to the end of the anal point, setae apparently simple; gonostylus only moderately broad, and narrowing markedly over distal quarter, 8+1 setae at tip.

Female: Not known

Pupa, Larva and Cytology: Not known

Somewhat similar to C. fujiprimus Sasa, and C. annularius (Degeer) but differs in details of the hypopygium.

Found: Mongolia - (Type locality) Bogd, Gobi Desert (1500 m).

[ Return to Index | Go to References ]