Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 210. Chironomini 107 Chironomus

210a. Cephalic tubercles with a short (50-75µm) and narrow (30-45µm) apex on a bulbous base (102l.jpg). Comb of segment VIII usually with a single apical tooth. Tracheoles of tracheal patch 3-4µm across. (Thoracic granulation distinct and extensive.)

Chironomus macani

210b. Cephalic tubercles gradually contracted to apex. Comb of segment VIII usually with two or more apical teeth. Tracheoles of tracheal patch less than 3µm across.

Step 211. Chironomini 108 Chironomus
Decision path