A revision of Eastern Palaearctic Anthobium Leach, 1819 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini). I. Gracilipalpe, morchella and nigrum groups Author Shavrin, Alexey V. Author Smetana, Aleš text Zootaxa 2017 2017-12-15 4365 1 1 39 journal article 31106 10.11646/zootaxa.4365.1.1 8e2d27e3-dec0-4ebb-bcd3-dd16e56c8092 1175-5326 1125219 5F132840-6E2F-42E6-8DF2-9EF191DE243C 3.3.1. Key to nigrum group 1 Anterior angles of pronotum strongly protruded anteriad. Elytra markedly wider than long. Aedeagus as in Fig. 77 . Habitus as in Fig. 67 . Body length: 3.90–4.20 mm . China : Yunnan ........................................ A. conjunctum sp.n. - Anterior angles of pronotum slightly protruded anteriad. Elytra as wide as long or slightly longer than wide............. 2 2 Punctation of pronotum very dense. Aedeagus very wide basally, markedly, evenly narrowed toward apex of median lobe ( Fig. 80 ). Habitus as in Fig. 68 . Body length: 3.50–4.27 mm . China : Yunnan ........................ A. densepunctatum sp.n. - Punctation of pronotum sparse. Aedeagus of different shape, not very wide basally ( Figs. 70, 72 ), sometimes quite narrow ( Fig. 82 )................................................................................................ 3 3 Pronotum slightly flattened in cross section, with indistinct medio-basal impression. Aedeagus as in Fig. 72 . Habitus as in Fig. 66 . Body length: 4.15–4.37 mm . China : Gansu ............................................. A. anishchenkoi sp.n. - Pronotum very convex, with deep medio-basal impression.................................................... 4 4 Elytra as wide as long. Apical part of median lobe of aedeagus narrow, apical portions of parameres very wide ( Fig. 82 ). Habitus as in Fig. 69 . Body length: 4.00– 4.71 mm . Nepal , Bhutan ........................................ A. ivani sp.n. - Elytra slightly longer than wide. Apical part of median lobe of aedeagus wide, apical portions of parameres relatively narrow ( Fig. 70 ). Habitus as in Fig. 65 . Body length: 3.44–4.75 mm . India........................ A. nigrum ( Cameron, 1924 )