Panscopaeus, SHARP, 1889

Assing, Volker, 2011, A revision of Panscopaeus (Coleoptera: Staphylinidae: Paederinae), Beiträge Zur Entomologie = Contributions to Entomology 61 (2), pp. 389-411 : 409-410

Key to the species of Panscopaeus

1. Head and pronotum without microsculpture (FigsF2-63); pronotum with very dense punctation, midline glossy. ♂: male sternite VIII posteriorly convexly produced, neither concave nor excised ( Fig. 64 ); aedeagus as in Figs 65-67 . Sumatra, Bali. .......................... ............................................................................................ P. cameronicameroni (SCHEERPELTZ)

- Head and pronotum with microsculpture; pronotum not with conspicuously dense punctation. ♂: male sternite VIII broadly concave to distinctly excised posteriorly; aedeagus of different morphology. .................................................................................................. B

2. Elytra short, approximately 0.9 times as long as pronotum ( Fig. 32 ). Pronotum and elytra reddish, distinctly contrasting with the blackish-brown head. Pronotum with lateral margins subparallel, short, broadly rounded towards posterior margin ( Fig. 32 ). ♂: sternite VIII posteriorly almost triangularly, broadly, and relatively deeply excised (Fig. 30); aedeagus as in Figs 33-34 . Taiwan. ..................................................................... P. formosanusformosanus sp. n .

- Elytra approximately as long as, or longer than pronotum. Coloration usually different. Pronotum usually with posteriorly converging and longer lateral margins. ♂: primary and secondary sexual characters different. ........................................................................... C

3. ♂: posterior margin of sternite VIII shallowly concave ( Figs 10-11 , 45-46 , 57 ). .......... D

- ♂: posterior margin of sternite VIII distinctly and more narrowly excised in the middle (Figs 25, 40). ............................................................................................................... F

4. ♂: aedeagus without long basal structure in internal sac; ventral process apically bifid ( Figs 12-21 ). Nepal, China, Japan. .......................................... P. lithocharoideslithocharoides (SHARP)

- ♂: aedeagus with long basal structure in internal sac; ventral process apically asymmetric. .....................................................................................................................................E

5. Microsculpture of head and pronotum less pronounced. ♂: sternite VIII approximately as long as wide, posterior margin more deeply and less broadly concave in the middle ( Fig.E7 ); aedeagus as in Figs 58-60 . Northern India: Uttarranchal , Sikkim. ................................... .................................................................................................. P. stilicinusstilicinus (CAMERON)

- Microsculpture of head and pronotum more pronounced. ♂: sternite VIII transverse, posterior margin broadly and shallowly concave (FigsD5-46); aedeagus with ventral process and dorsal plate of distinctive shape ( Figs 47-52 ). Sri Lanka. .... P. breviusculus (KRAATZ)

6. ♂: sternite VIII posteriorly broadly, concavely, and rather deeply excised (Fig.D 0); aedeagus with strongly asymmetric ventral process ( Figs 41-43 ). Known only from Nilgiri Hills, southern India. ....................................................................... P. andrewesiandrewesi (CAMERON)

- ♂: sternite VIII posteriorly more narrowly, triangularly, and less deeply excised (Fig. 25); aedeagus with apically bifid and not distinctly asymmetric ventral process (Figs 26-27, 29). S-Japan: Ryuku Islands ; China; Taiwan. ...................................... P. yakushimanus (ITO)

Figures

Figs 61-67: Panscopaeus cameroni: forebody (61); median dorsal portion of head (62); median portion of pronotum (63); male sternite VIII (64); aedeagus in lateral view (65); aedeagus in ventral view (66); apical portion of aedeagus in ventral view (67). Scale bars: 61: 0.5 mm; 64-66: 0.2 mm; 62-63, 67: 0.1 mm.

Figs 31-34: Panscopaeus formosanus: habitus (31); forebody (32); aedeagus in lateral view (33); aedeagus in ventral view (34). Scale bars: 31: 1.0 mm; 32: 0.5 mm; 33-34: 0.2 mm.

Figs 1-11: Panscopaeus lithocharoides: habitus (1); forebody (2); median dorsal portion of head (3); labrum (4); anterior median portion of labrum (5); ligula (6); left and right mandible (7-8); median dorsal portion of pronotum (9); male sternite VIII (10-11). Scale bars: 1: 1.0 mm; 2: 0.5 mm; 10-11: 0.2 mm; 3-9: 0.1 mm.

Figs 44-52: Panscopaeus breviusculus (44, 46-47, 50-52: lectotype): forebody (44); male sternite VIII (45-46); aedeagus in lateral view (47-48); aedeagus in ventral view (49); aedeagus in dorsal view (50); apical portion of aedeagus in ventral view (51); dorsal plate of aedeagus (52). Scale bars: 44: 0.5 mm; 45-52: 0.2 mm.

Figs 53-60: Panscopaeus stilicinus (57-60: lectotype): habitus (53); forebody (54); median dorsal portion of head (55); postero-median portion of pronotum (56); male sternite VIII (57); aedeagus in lateral view (58); aedeagus in ventral view (59); apical portion of aedeagus in dorsal view (60). Scale bars: 53: 1.0 mm; 54: 0.5 mm; 57-60: 0.2 mm; 55-56: 0.1 mm.

Figs 12-21: Panscopaeus lithocharoides: aedeagus in lateral view of males from Japan (12-14), China (15), and Nepal (18); apical portion in lateral and in ventral view of holotype of M. deharvengi (16-17); aedeagus in ventral view of males from Nepal (19), Japan (20), and China (21). Scale bar: 0.2 mm.

Figs 35-43: Panscopaeus formosanus (35-36) and P. andrewesi, lectotype (37-43): median dorsal portion of head (35, 38); median portion of pronotum (36); forebody (37); posterior portion of pronotum (39); male sternite VIII (40); aedeagus in lateral view (41); aedeagus in ventral view (42); apical portion of aedeagus in dorsal view (43). Scale bars: 37: 0.5 mm; 40-43: 0.2 mm; 35-36, 38-39: 0.1 mm.