Key: Step 667. Orthocladiinae 79 Nanocladius

667a. Segment VII without lateral taeniae; all 4 lateral setae bristle-like (043d.jpg).

Nanocladius parvulus

667b. Segment VII with 1 to 4 lateral taeniae.

Step 668. Orthocladiinae 80 Nanocladius
Decision path