Enaptorhinus

Han, Kyungduk, Zhang, Runzhi & Pelsue, Frank W., Jr., 2007, Keys To The Species Of The Genus Enaptorhinus Waterhouse (Coleoptera: Curculionidae: Entiminae: Tanymecini) With Description Of A New Species From China, The Coleopterists Bulletin 61 (1), pp. 127-134 : 129-130

Key to the species of the genus Enaptorhinus (females) (except E. fallax and E. dispar )

1. Pterygium of rostrum not developed; setae on anterior margin of elytral punctures broad, leaf-like; dorsal surface of rostrum strongly tumid....... 2

19 Pterygium of rostrum developed; setae on anterior margin of elytral punctures fine, hair-like; dorsal surface of rostrum slightly tumid.......... 3

2 Funicular antennomere 1 much longer than 2 (1.75: 1); eye slightly convex, oval; surface of elytra covered with circular and oval scales, scales slightly overlapping each other............................ E. shansiensis n. sp.

29 Funicular antennomere 1 little longer than 2 (1.3: 1); eye convex, oblique; surface of elytra covered with pentagonal, circular, and oval scales, scales separated, not overlapping.................................. E. argentellus Voss

3. Elytral intervals 2 and 3 with elongated, oval scales......................... 4

39 Elytral intervals 2 and 3 with circular and oval scales....................... 5

4 Dorsal surface of pronotum with large granules (24 granules/mm 2); with bare gap between granules......................................... E. alini Voss

49 Dorsal surface of pronotum with granules smaller (30 granules/mm 2); space between granules with small, oval scales..... E. convexiusculus Heller

5. Elytral intervals 9–11 with dense, plume-like scales.... E. granulatus Pascoe

59 Elytral intervals 9–11 without (or only 11 with few) plume-like scales............................................................... E. sinensis Waterhouse