Key: Step 405. Tanytarsini 48 Rheotanytarsus

405a. Smaller, 3.2-3.9mm. Less than 23 taeniae in anal lobe fringe.

Rheotanytarsus pentapoda

405b. Larger, 4.2-4.7mm. 24 Or more taeniae in anal lobe fringe.

Rheotanytarsus pe3
Decision path