Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 627. Orthocladiinae 39 Heterotrissocladius

627a. Pedes spurii B II narrow, about as high as wide. Pedes spurii A present on segments IV-VI, absent on VII. (Segment VII with 3 lateral taeniae. Exuviae about 4mm long.)

Heterotrissocladius maeaeri

627b. Pedes spurii B II much wider than high. Pedes spurii A present on segment VII, but may be composed of very small spinules.

Step 628. Orthocladiinae 40 Heterotrissocladius
Decision path