Sinocaulus

Jin, Zhenyu, Ślipiński, Adam & Wang, Wenkai, 2015, Description of a new species of Sinocaulus Fairmaire from China (Coleoptera: Dascillidae), Zootaxa 3974 (4), pp. 582-588 : 587

Key to the species of Sinocaulus

( S. laticollis Fairmaire, 1891 is not included because its taxonomic position is unclear.)

1. Eyes strongly protuberant; scutellar shield about as long as wide; sternite IX obtuse apically.......................... 2

- Eyes moderately protuberant; scutellar shield distinctly transverse; sternite IX trapezoidal apically...................... 3

2. Aedeagus with phallobase pointed at base, ventral lobes obviously shorter than dorsal lobe................................................................................................. S. omiensis Jin, Ślipiński & Pang, 2013

- Aedeagus with phallobase truncated at base ( Fig. 22 ), ventral lobes slightly shorter than dorsal lobe........................................................................................................ S. truncatus sp. nov.

3. Mentum strongly wider than long; pronotum dark brown; tergite X with apex trapezoidal; penis with dorsal lobe with apex very slender and narrowly rounded............................................ .. S. rubrovelutinus Fairmaire, 1878

- Mentum slightly wider than long; pronotum reddish; tergite X with apex truncate; penis with dorsal lobe acute apically.......................................................................... S. clypeatus Jin, Ślipiński & Pang, 2013

Figures

FIGURES 20 – 26. Sinocaulus truncatus sp. n. (20 – 21) habitus: (20) female; (21) male; (22 – 24) aedeagus: (22) ventral; (23) dorsal; (24) lateral; (25) male abdominal sternite IX; (26) male abdomen tergites X – XI.