Domene scabripennis, ROUGEMONT, 1995

Assing, V. & Feldmann, B., 2014, On Domene scabripennis ROUGEMONT and its close relatives (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 46 (1), pp. 499-514 : 512-513

Key to the species of the Domene scabripennis group

1. Antennae moderately slender; antennomere X barely 1.5 times as long as broad. Protarsomeres I-IV strongly dilated. Head flattened, of nearly subcircular shape, and broadest behind eyes ( Fig. 36 ). Whole body blackish.: sternite VIII with pronounced median impression with numerous distinctly modified short and stout black setae, on either side of the posterior excision without cluster of black setae ( Fig. 41 ); aedeagus larger, approximately 1.65 mm long, with bisinuate ventral process (lateral view), and with completely reduced dorsal plate ( Figs 42-43 ). China: Zhejiang ( Map 1 )...................... ........................................................................................................... D. firmicornis nov.sp.

- Antennae slender; antennomere X nearly twice as long as broad. Protarsomeres I-IV rather weakly dilated. Head less strongly flattened and not of subcircular shape.: sternite VIII with few modified setae at most, on either side of posterior excision with cluster of black setae; aedeagus smaller, approximately 1.15 mm long and with distinct dorsal plate..........................................................................................................................2

2. Posterior margin of abdominal tergite VII without palisade fringe.: sternite VIII as in Fig. 24 ; aedeagus as in Figs 25-26 . China: western Yunnan ( Map 1 )............................... ........................................................................................................ D. immarginata nov.sp.

- Posterior margin of abdominal tergite VII with palisade fringe.: male sexual characters different..............................................................................................................3

3. Elytra shorter, approximately 0.8 times as long as pronotum. Punctation of head and pronotum coarse.: aedeagus with very slender ventral process. Taiwan........................4

- Elytra longer, at least approximately 0.95 times as long as pronotum. Punctation of head and pronotum fine.: aedeagus with less slender ventral process. Absent from Taiwan.................................................................................................................................5

4. Legs reddish.: sternite VIII with deeper and slightly narrower posterior excision ( Fig. 7 ); aedeagus as in Fig. 8 . Central western Taiwan: Taichung Hsien: Anma Shan ( Map 1 )................................................................................... D. scabripennis ROUGEMONT

- Legs blackish-brown.: sternite VIII with shallower and broader posterior excision ( Fig. 15 ); aedeagus as in Figs 16-17 . Southern Taiwan: Kaohsiung Hsien ( Map 1 ) ............. ............................................................................................................... D. alesiana nov.sp.

5. Head approximately as broad as long ( Fig. 28 ). Elytra approximately as long as pronotum ( Fig. 28 ). Pronotum more oblong, approximately 1.23 times as long as broad ( Fig. 28 ).: sternite VIII and aedeagus as in Figs 32-34 . Vietnam ( Map 1 )........................ .............................................................................................................. D. sagittata nov.sp.

- Head noticeably oblong. Elytra approximately 0.95 times as long as pronotum. Pronotum less oblong, approximately 1.13 times as long as broad. unknown. Laos; China: Guangdong ...................................................................................................... D. sp.

Figures

Map 1: Distributions of the species of the Domene scabripennis group: D. immarginata (white circles), D. sagittata (black diamond), D. scabripennis (black triangle), D. alesiana (white triangle), and D. firmicornis (black circle).

Figs 36-44: Domene firmicornis nov.sp. (36-43) and D. immarginata nov.sp. (44): (36) forebody; (37) median portion of head; (38) median portion of pronotum; (39) disc of left elytron; (40) male sternite VII; (41) male sternite VIII; (42) aedeagus in lateral view; (43) apical portion of aedeagus in ventral view; (44) female sternite VIII. Scale bars: 36: 1.0 mm; 40-44: 0.5 mm; 37-39: 0.2 mm.

Figs 18-26: Domene immarginata nov.sp.: (18) habitus; (19) forebody; (20) median dorsal portion of head; (21) median portion of pronotum; (22) anterior sutural portion of elytra; (23) male sternite VII; (24) male sternite VIII; (25) aedeagus in lateral view; (26) apical portion of aedeagus in ventral view. Scale bars: 18-19: 1.0 mm; 23-26: 0.5 mm; 20-22: 0.2 mm.

Figs 1-8: Domene scabripennis ROUGEMONT (paratype): (1) habitus; (2) forebody; (3) median dorsal portion of head; (4) median portion of pronotum; (5) sutural portion of elytra; (6) male sternite VII; (7) male sternite VIII; (8) aedeagus in lateral view. Scale bars: 1-2: 1.0 mm; 6-8: 0.5 mm; 3-5: 0.2 mm.

Figs 9-17: Domene alesiana nov.sp.: (9) habitus; (10) forebody; (11) median dorsal portion of head; (12) median portion of pronotum; (13) disc of right elytron; (14) male sternite VII; (15) male sternite VIII; (16-17) aedeagus in lateral and in ventral view. Scale bars: 9-10: 1.0 mm; 14-17: 0.5 mm; 11-13: 0.2 mm.

Figs 27-35: Domene sagittata nov.sp. (27-34) and D. immarginata nov.sp. (35): (27) habitus; (28) forebody; (29) median dorsal portion of head; (30) sutural portion of elytra; (31) male sternite VII; (32) male sternite VIII; (33) aedeagus in lateral view; (34) apical portion of aedeagus in ventral view; (35) female tergites IX-X. Scale bars: 27-28: 1.0 mm; 31-35: 0.5 mm; 29-30: 0.2 mm.