Key: Step 244. Chironomini 141

244a. Tergite armament of Parachironomus pattern: hook row II on the posterior edge of a projecting flap of the tergite; tergites III-VI with the points increasing in size posteriorly in each segment, the extent of the median patch and the size of the points increasing on succeeding segments; posterior points of tergite VI set on a projecting flap and conspicuously larger than the preceding points (110g.jpg).

Step 245. Chironomini 142 Parachironomus

244b. Tergite armament otherwise.

Step 258. Chironomini 155
Decision path