Key: Step 135. Chironomini 32 Chironomus

135a. Sternite I at most with antero-lateral mounds weakly toothed (098i.jpg). Frontal warts much smaller than the cephalic tubercles.

Chironomus carbonarius

135b. Sternite I with a median posterior transverse band of sharp points extended anteriorly on each side; antero-lateral mounds strongly toothed (098h.jpg). In males frontal warts and cephalic tubercles are of similar size, in females the frontal warts are narrower (099b.jpg; 099c.jpg).
099-1.jpg species overview

Chironomus dissidens
Decision path