Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 401. Tanytarsini 44 Rheotanytarsus

401a. On the dorsal surface of the anal lobe is a stiff seta or taenia (often difficult to see) (134c.jpg). Thoracic horn with only a few fine setulae on the distal half (134b.jpg).
134-1.jpg species overview

Rheotanytarsus curtistylus

401b. Anal lobes without a dorsal seta or taenia. Thoracic horn with the distal half bearing many setulae (134f.jpg).

Step 402. Tanytarsini 45 Rheotanytarsus
Decision path