Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 153. Chironomini 50 Chironomus

153a. Large: about 13mm long. Tracheal patch of thoracic horn with a distinct "eye": a tracheole-free hole running through the anterior lobe of the patch (102k.jpg). Anal lobes straight laterally, nearly parallel-sided (102j.jpg). (Comb of segment VIII dark brown, closely pleated longitudinally, with 2/3 short apical teeth.)

Chironomus heteropilicornis

153b. Tracheal patch of thoracic horn without an "eye". If anal lobes straight-sided, then exuvial length less than 10mm.

Step 154. Chironomini 51 Chironomus
Decision path