Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 78. Tanypodinae 64 Larsia

78a. Abdominal tergites (019i.jpg) with a broad antero-median dark patch extending to the lateral adhesion marks, and an antero-lateral dark patch on the pleura; colourless posteriorly and postero-laterally. Respiratory atrium alveolar, with a narrow median channel (019h.jpg). Anal lobes with small teeth externally only.

Larsia atrocincta

78b. Abdominal tergites (019g.jpg) with a narrow anterior and posterior dark transverse band joined on each side of mid-line by a diagonal band (approximating posteriorly), leaving a pear-shaped pale area medially. Respiratory atrium with diverticuli well-separated, the median 'channel' broad and sinuous (019e.jpg). Anal lobes small-toothed externally and internally (019f.jpg).

Larsia curticalcar
Decision path