Key: Step 327. Chironomini 224 Polypedilum

327a. Tergites II and III without median point patch (124k.jpg); apical bands present on tergites III-V, those on III and V widely broken medially.

Polypedilum pe12

327b. Tergites II and III with median point patch; apical bands III and IV complete.

Step 328. Chironomini 225 Polypedilum
Decision path