Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 870. Orthocladiinae 281 Orthocladius

870a. Tergites IV and V with the median points somewhat larger than the more lateral and showing up as a more or less circular area within the point patch (078g.jpg).

Orthocladius maius

870b. Tergites IV and V with points of the median patch grading in size from mid-tergite outwards (078f.jpg).

Step 871. Orthocladiinae 282 Orthocladius
Decision path