Key: Step 399. Tanytarsini 42 Rheotanytarsus

399a. Tergites II-IV with anterior point patches and II with an additional pair of small patches posteriorly (134k.jpg). Frontal apotome granulate.

Rheotanytarsus pellucidus

399b. Tergites II-V or II-VI with anterior paired point patches. Frontal apotome smooth.

Step 400. Tanytarsini 43 Rheotanytarsus
Decision path