Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 786. Orthocladiinae 198 Metriocnemus

786a. Anal macrosetae about 1/3rd the length of the anal lobes (062l.jpg). Tergites II-VIII with the flattened teeth of the posterior transverse rows conical in form.

Metriocnemus tristellus

786b. Anal macrosetae 1/7th to 1/12th anal lobe length. Flattened teeth of the posterior transverse rows semicircularly rounded off at apex.

Step 787. Orthocladiinae 199 Metriocnemus
Decision path