Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 604. Orthocladiinae 16 Corynoneura

604a. Sternite I often covered with spinules, otherwise medially bare, occasionally armed only in antero-lateral corners, the antero-lateral spinules conspicuously large, as large as those on sternite II. (Frontal setae taeniate, often missing; 3rd dorsocentral seta taeniate.)

Corynoneura arctica

604b. Sternite I not completely covered with spinules; if the antero-lateral corners are armed, then the spinules are smaller than those on sternite II (though there may be larger spinules posteriorly).

Step 605. Orthocladiinae 17 Corynoneura
Decision path