Key to Rhyparoclopius species

1. Male and female brachypterous; hind lobe of pronotum approximately half long as fore lobe of pronotum (Figs. 6–8, 31).............................................................................................. R. aokiae sp. nov.

-. Male and female macropterous; fore and hind lobe of pronotum subequally........................................ 2

2. Integument with dense and long erect bristles, particularly on head, thorax and legs (Figs. 1, 4–5); seventh (sixth visible) abdominal segment of male enlarged and truncate apically, with a median apical notch (Figs. 1–2, 4); total length 16.5–17 mm ........................................................................................ R. annulirostris

-. Integument with much less dense and short erect bristles; seventh (sixth visible) abdominal segment of male ending in two prominences; total length 12.5–13.5 or 19.5–22 mm .......................................................... 3

3. Total length 19.5–22 mm; seventh (sixth visible) abdominal segment of male ending in short prominences (Figs. 41–42)............................................................................................... R. desiccatus

-. Total length 12.5–13.5mm; seventh (sixth visible) abdominal segment ending in elongated rounded prominences with a broad sinus in between............................................................................... R.dubius