Usanus, DeLong, 1947

Pinedo-Escatel, J. Adilson & Dietrich, Christopher H., 2020, Nomenclatural changes and two new species in the leafhopper genus Usanus DeLong (Hemiptera: Cicadellidae) with notes on conservation status, Zootaxa 4822 (4), pp. 567-576 : 570

Key to species of the leafhopper genus Usanus

1 Aedeagus with one pair of long processes arising near midlength; apex dorsally serrated............ xochipalensis sp. nov.

- Aedeagus with 2-3 pairs of processes arising at or near apex; apex smooth........................................ 2

2(1) Aedeagus with two pairs of apical processes................................................................ 3

- Aedeagus with three pairs of apical processes............................................................... 5

3(2) Forewing with yellowish opaque pigment on clavus, claval veins confluent for short distance; aedeagus without lateral flanges, apical processes directed anterodorsad........................................................... tuxcacuensis

- Forewing uniformly translucent, claval veins separate; aedeagus with lateral flanges, apical processes directed dorsad and anteromesad........................................................................................... 4

4(3) Apical pair of aedeagal processes extended distad from base of rounded preapical flanges; preapical pair sinuate.............................................................................................. igualaensis sp. nov.

- Apical pair of aedeagal processes curved anteromesad from flange apices; preapical pair straight................. youajla

5(2) Aedeagal flanges broadened apically in ventral view.................................................. hemicycla

- Aedeagal flanges tapered apically in ventral view.................................................. xajxayakamej