Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 105. Chironomini 2 Rheomus

105a. Anal lobes without fringe (092d.jpg). Abdominal sternites without toothed mounds. Comb of segment VIII absent. Thoracic horn without an exceptionally long branch. (Hook row II absent.)
092-1.jpg species overview

Rheomus yahiae

105b. Anal lobes fringed. At least some abdominal sternites armed with toothed mounds posteriorly. Comb of segment VIII thorn-like, set close behind the 4th lateral taenia. One branch of the thoracic horn is very long and stiff, extending forwards for over half the exuvial length and not itself branched for its proximal half, the other initial branches small and clustered around its base.

Step 106. Chironomini 3 Cryptotendipes
Decision path