Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 692. Orthocladiinae 104

692a. Tergites III-V, III and IV, or V alone, with a transverse row of dark hooks at the posterior edge of the segment which may be widely broken medially. (Tergite II without hook row, or rarely with 1-2 hooks.)

Step 693. Orthocladiinae 105

692b. If hook rows are present on tergites III, IV and/or V, then there is also a hook row on II, or on VI and VII.

Step 723. Orthocladiinae 135
Decision path