Batricavus, Yin & Li, 2011

Yin, Zi-Wei, Löbl, Ivan & Li, Lizhen, 2014, A new Batricavus species from East Malaysia (Coleoptera: Staphylinidae: Pselaphinae), Revue suisse de Zoologie 121 (1), pp. 11-13 : 12

Revised key to male Batricavus

1a Anterior margin of frons conspicuously protruding anteriorly to form two horn-like projections ( Fig. 1A ); antennomeres VI greatly enlarged, with large mesal cavity ( Fig. 1B ). (East Malaysia: Sabah). B. cornutus sp. nov.

1b Frons simple, without modification; antennomeres VI not enlarged........ 2

2a Protibiae simple; metafemora near apical fourth broadened mesally ( Yin & Li, 2012: 37, fig. 2B); tergite IV with large median cavity ( Yin & Li, 2012: 37, fig. 2A). (South China: Hainan)......... B. abdominalis Yin & Li

2b Protibiae expanded laterally, either at apical forth ( Yin et al., 2011: 4, fig. 8) or near middle ( Yin & Li, 2012: 38, fig. 3A); metafemora and tergite IV simple.............................................. 3

3a Antennomeres VIII much larger than VII ( Yin et al., 2011: 4, fig. 6); apical fourth of protibiae expanded laterally and angular ( Yin et al., 2011: 4, fig. 8). (South China: Guangdong; East China: Zhejiang)................................................... B. tibialis Yin & Li 3a Antennomeres VIII distinctly smaller than VII ( Yin & Li, 2012: 36, fig. 1B); protibiae expanded laterally near middle and angular ( Yin & Li, 2012: 38, fig. 3A). (South China: Hainan)......... B. hainanensis Yin & Li

Figures

FIG. 1 Batricavus cornutus. (A) Male habitus. (B) Left antenna. (C) Apical portion of mesotibia. (D) Aedeagus, in dorsal view. (E) Same, in lateral view. Scales (mm): A = 0.5, B = 0.2, C, D, E = 0.1 mm.