Key: Step 267. Chironomini 164 Stenochironomus

267a. Exuviae over 7mm long. Comb of segment VIII with 7-9 marginal teeth (114i.jpg). Fringe of anal lobes of 71-105 taeniae. Hook row II about 3/4 the width of segment II. Sternite I extensively spinulate.
114-2.jpg species overview

Stenochironomus gibbus

267b. Exuviae less than 7mm long. Comb of segment VIII with 2/3 marginal teeth (114j.jpg). Fringe of anal lobes of 37-45 taeniae. Hook row II about 3/5 the width of segment II. Sternite I smooth.

Stenochironomus pe2
Decision path