Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 203. Chironomini 100 Chironomus

203a. Sternite IV postero-laterally bare, without a patch of enlarged points.

Chironomus islandicus

203b. Sternite IV with pedes spurii A, a patch of spinous points in the postero-lateral corners. (These are the enlarged posterior points of the lateral shagreen bands.)

Step 204. Chironomini 101 Chironomus
Decision path