Key: Step 749. Orthocladiinae 161 Rheosmittia

749a. Setae D5 of tergites III and IV very widely fanned out apically (057b.jpg).
057-1.jpg species overview

Rheosmittia spinicornis

749b. Setae D5 of tergites III and IV less widely fanned out apically (058k.jpg).

Rheosmittia spec-b
Decision path