Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 643. Orthocladiinae 55 Hydrobaenus

643a. Genital sheaths of both sexes with an obvious small apical papilla. Anal lobe fringe stopping far short of the anal macrosetae.

Hydrobaenus lapponicus

643b. Genital sheaths without an apical papilla. Anal lobe fringe continued to the bases of the anal macrosetae.

Step 644. Orthocladiinae 56 Hydrobaenus
Decision path