Eusclerus

Assing, V., 2011, A revision of Eusclerus SHARP, with a redescription of Sciocharis buphthalma SCHEERPELTZ (Coleoptera: Staphylinidae: Paederinae: Medonina), Linzer biologische Beiträge 43 (2), pp. 1169-1177 : 1174

Key to the species of Eusclerus

1 Head and pronotum blackish; elytra dark-brown. Head with coarse and dense, but not distinctly confluent punctation ( Fig. 3 ); posterior angles obsolete ( Fig. 2 ). Pronotum with broader impunctate band in the middle. Elytral punctation not granulose. Metatarsus slender, metatarsomeres III and IV distinctly oblong .......... E. rugifrons SHARP

- Forebody uniformly dark reddish-brown. Head with less coarse and largely confluent punctation ( Fig. 7 ); posterior angles noticeable ( Fig. 6 ). Elytral punctation granulose. Metatarsus short, metatarsomeres III and IV not oblong.: sternite VII as in Fig. 9 ; aedeagus as in Figs 10-11 ........................................................................ E. sordidus SHARP

Figures

Figs 1-4: Eusclerus rugifrons SHARP, holotype: (1) habitus; (2) forebody; (3) median dorsal portion of head; (4) median dorsal portion of pronotum. Scale bars: 1: 1.0 mm; 2: 0.5 mm; 3-4: 0.2 mm.

Figs 5-11: Eusclerus sordidus SHARP, holotype: (5) habitus; (6) forebody; (7) median dorsal portion of head; (8) median dorsal portion of pronotum; (9) male sternite VIII; (10-11) aedeagus in lateral and in ventral view. Scale bars: 5: 1.0 mm; 6: 0.5 mm; 7-9: 0.2 mm; 10-11: 0.1 mm.