Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 3. Telmatogetoninae 1 Thalassomya

3a. Anal disc ventrally with 2 setae in the posterior half of each side, marginally with simple, unbranched setae.

Thalassomya frauenfeldi

3b. Anal disc ventrally with more than 4 setae in the posterior half on each side (001e.jpg), marginally with the setae forked or thrice branched (001f.jpg).

Step 4. Telmatogetoninae 2 Telmatogeton
Decision path