Anthobium crassum, Shavrin & Smetana, 2019

Shavrin, Alexey V. & Smetana, Aleš, 2019, A revision of Eastern Palaearctic Anthobium Leach, 1819 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini). III. Consanguineum, crassum and reflexum groups, and an additional species of the fusculum group, Zootaxa 4688 (4), pp. 451-482 : 460

Key to the species of the crassum group

1 Pronotum with anterior angles widely rounded, lateral margins with strong tooth-shaped projections. Lateral portions of elytra very wide. Body yellow-brown. Apical portion of median lobe wide, parameres narrow and very long, internal sac simple ( Fig. 69 ). Body length: 3.20–3.27 mm. Habitus as in Fig. 58 . China: Sichuan ........................... A. explanatum sp.n.

- Pronotum with more narrow anterior angles, lateral margins with indistinct to distinct small projections. Lateral portions of pronotum markedly narrower. Body reddish-brown to brown. Apical portion of median lobe narrower, parameres wider and shorter, internal sac with complex, large distal portion ( Figs. 60, 62 , 71 ).......................................... 2

2 Punctation of pronotum and elytra small and sparse. Aedeagus as in Fig. 71 . Body length: 3.87 mm. Habitus as in Fig. 59 . China: Sichuan ............................................................................ A. farkaci sp.n.

- Punctation of pronotum large, deep, and dense. Aedeagi different ( Figs. 60, 62 )................................... 3

3 Elytra short, slightly widened posteriad, about as long as combined wide. Median lobe rather narrow, parameres longer, markedly exceeding apex of median lobe ( Fig. 60 ). Body smaller: 2.62–3.12 mm. Habitus as in Fig. 56 . China: Yunnan ................................................................................................ A. crassum sp.n.

- Elytra subparallel-sided, long, longer than combined wide. Median lobe wide, parameres shorter, slightly exceeding apex of median lobe ( Fig. 62 ). Body larger: 3.40 mm. Habitus as in Fig. 57 . China: Yunnan .................. A. crenulatum sp.n.

Figures

FIGURES 69–72. Aedeagus of Anthobium explanatum (69–70: paratype) and A. farkaci (71–72: holotype): 69, 71—parameral view, 70, 72—lateral view. Scale bar: 0.1 mm.

FIGURES 56–59. Habitus of species of Anthobium crassum-group: 56—A. crassum (holotype), 57—A. crenulatum (holotype), 58—A. explanatum (holotype), 59—A. farkaci (holotype). Scale bar: 1.0 mm.

FIGURES 60–63. Aedeagus of Anthobium crassum (60–61: paratype) and A. crenulatum (62–63: holotype): 60, 62—parameral view, 61, 63—lateral view. Scale bar: 0.1 mm.