Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 2. Couplet 2 to Subfamilies

2a. Apparently only 8 abdominal segments. 'Anal discs' broadly rounded, fringed with short hairs, without lateral taeniae or long apical setae, though dorsal setae may be present (001i.jpg).
(Thoracic horn present. Abdominal segments not fringed laterally.)

Subfamily Telmatogetoninae.

Step 3. Telmatogetoninae 1 Thalassomya

2b. 9 abdominal segments. If anal lobes broadly rounded and fringed with short hairs, then 2 lateral taeniae or 3-5 apical setae present, or the posterior abdominal segments also fringed laterally with short hairs.

Step 5. Couplet 3 to Subfamilies
Decision path