Linan Hlaváč, 2002

Yin, Zi-Wei, Li, Li-Zhen & Zhao, Mei-Jun, 2011, A review of the genus Linan (Coleoptera: Staphylinidae: Pselaphinae), Acta Entomologica Musei Nationalis Pragae 51 (1), pp. 123-135 : 135

Key to males of Linan Hlaváč, 2002

1. Antennae with antennomeres IX–X strongly modified ( Figs. 7, 9, 11 ). L. chinensis species-group. .............................................................................................................. 2

– Antennae with antennomeres IX–X not modified ( Figs. 8, 10 ). L. cardialis speciesgroup. ........................................................................................................................... 4

2. Antennomere IX in male with finely punctate sensory area ( Figs. 7, 9 ); median metaventral horn-like processes bifurcate at apex in lateral view ( Figs. 17, 19 ) ................ 3

– Antennomere IX in male without finely punctate sensory area ( Fig. 11 ); median metaventral horn-like processes not bifurcate at apex in lateral view ( Fig. 21 ). China: Guizhou Province. .................................................................... L. megalobus Yin & Li sp. nov.

3. Scape about 4.6 times as long as wide; sensory area of antennomere IX nearly triangular, extended from basal sixth toward anterior margin ( Fig. 7 ); pro- and mesotrochanters each with small but distinct spine on posterior margin ( Figs. 22–23 ); tergite IV about four times as long as next. Thailand: Wiang Pa Pao; China: Yunnan Province. ............ ............................................................................................... L. cardialis Hlaváč, 2002

– Scape about 5.0 times as long as wide; sensory area of antennomere IX linear, extended from middle toward posterior margin ( Fig. 9 ); pro- and mesotrochanters without spine or protuberance on posterior margin; tergite IV about twice as long as next. China: Hainan Island. ............................................................................... L. hainanicus Hlaváč, 2002

4. Median metaventral horn-like processes large ( Fig. 20 ); aedeagus ( Figs. 33–34 ). China: Anhui Province. ........................................................... L. inornatus Yin & Li sp. nov.

– Median metaventral horn-like processes small ( Fig. 18 ); aedeagus ( Figs. 29–30 ). China: Zhejiang Province. ................................................................ L. chinensis ( Löbl, 1964)

Figures

Figs. 7–11.Antennal segments VIII–XI of Linan spp. in male. 7 – L. cardialis Hlaváč, 2002; 8 – L. chinensis (Löbl, 1964); 9 – L. hainanicus Hlaváč, 2002; 10 – L. inornatus sp. nov.; 11 – L. megalobus sp. nov. Scales: 0.3 mm.

Figs. 12–21. Pronotum and metaventral horn-like processes of Linan spp. in male. 12, 17 – L. cardialis Hlaváč, 2002; 13, 18 – L. chinensis (Löbl, 1964); 14, 19 – L. hainanicus Hlaváč, 2002; 15, 20 – L. inornatus sp. nov.; 16, 21 – L. megalobus sp. nov. Scales: 0.2 mm.

Figs. 22–26. Details of legs of Linan spp. in male. 22 – protrochanter and profemur of L. cardialis Hlaváč, 2002; 23 – mesotrochanter and mesofemur of L. cardialis; 24 – protibia of L. cardialis; 25 – protibia of L. hainanicus Hlaváč, 2002; 26 – protibia of L. megalobus sp. nov. Scales: 0.3 mm.

Figs. 27–41. Aedeagus and sternite IX of Linan spp. 27, 29, 31, 33, 35 – aedeagus, in dorsal view; 28, 30, 32, 34, 36 – aedeagus, in lateral view; 37–41 – sternite IX of Linan spp. 27, 28, 37 – L. cardialis Hlaváč, 2002; 29–30, 38 – L. chinensis (Löbl, 1964); 31–32, 39 – L. hainanicus Hlaváč, 2002; 33–34, 40 – L. inornatus sp. nov.; 35–36, 41 – L. megalobus sp. nov. Scales: 0.2 mm (a, b, c, d, e); 0.1 mm (f, g, h, i, j).