Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 544. Diamesinae 20 Potthastia

544a. Anterior dorsocentral seta many-branched. Apical transverse point bands present on tergites (II)III-VI only (028f.jpg). Apical projection of the anal lobes smooth, though there is a patch of setaceous points ventral to the apical setae (028g.jpg).

Potthastia montium

544b. Anterior dorsocentral seta usually simple, rarely bifid. Apical transverse point bands present on segments III-VII(VIII). Apical triangular projection of anal lobes usually scaled or toothed.

Step 545. Diamesinae 21 Potthastia
Decision path