Key: Step 659. Orthocladiinae 71 Rheocricotopus

659a. Posterior margin of tergite VIII armed at most with small points (046g.jpg). (Pedes spurii B of segment II absent.)

Rheocricotopus chalybeatus

659b. Posterior margin of tergite VIII armed with long teeth.

Step 660. Orthocladiinae 72 Rheocricotopus
Decision path