Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 841. Orthocladiinae 252 Orthocladius

841a. Abdominal tergites III-VII(VIII) with a conspicuous median anterior patch of brown points about 1/8th tergite breadth (073c.jpg). Thoracic horn elongate and closely granulate for its distal 3/4ths (073b.jpg). 4 dorsocentral setae, more or less equidistant, the 2nd thinner than the other 3. 073-1.jpg species overview

Orthocladius rivulorum

841b. Abdominal segments without anterior point patches. Thoracic horn small, oval, shortly petiolate, or absent.

Step 842. Orthocladiinae 253 Orthocladius
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