Key: Step 334. Chironomini 231

334a. Armament of tergites III-V more extensive laterad. Anal lobes generally rounded. If thoracic horn much branched, tracheolar patch at base larger.

Step 335. Chironomini 232

334b. Armament of tergites II-VI a median longitudinal band (149b.jpg), on II restricted to the posterior half, on III extended anteriad as far as setae D1, on IV-VI occupying much of the length of the tergite. Anal lobes parallel-sided. Thoracic horn many branched, but tracheolar patch at base very small. (Vortex present. Comb of segment VIII absent.) Chironomini gen.? sp.? Pe5

Tribus Chironomini
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