Review of the genus Anthobium Leach, 1819 (Coleoptera: Staphylinidae: Omaliinae) of Western Palaearctic region Author Shavrin, Alexey V. text Zootaxa 2024 2024-11-12 5537 4 451 474 http://dx.doi.org/10.11646/zootaxa.5537.4.1 journal article 10.11646/zootaxa.5537.4.1 1175-5326 14240224 46B2747F-200D-4C4A-9DAA-48CBC9FD6BBA Key to Western Palaearctic species of Anthobium 1 Body elongate. Pronotum relatively narrow, about one and a half as broad as long. Elytra distinctly longer than broad. Median lobe and apical portions of parameres significantly broadened ( Fig. 23 in Shavrin (2022a)) . Habitus as in Fig. 1 in Shavrin (2022a) . Body reddish-brown to dark brown. Body large: 4.30–5.50 mm . Middle Europe....................... algidum - Body wide, somewhat shortened. Pronotum transverse, about twice as broad as long or slightly narrower. Median lobe and apical portions of parameres narrower. Body smaller......................................................... 2 2 Forebody less elevated, somewhat flattened. Middle potion of pronotum evenly elevated, sometimes with indistinct longitudinal impression. Aedeagus as in Fig. 62 in Shavrin (2022a) . Habitus as in Fig. 2 in Shavrin (2022a) . Body brown to reddish-brown. Body length: 2.70–4.50 mm . Transpalaearctic species.................................................... tectum - Forebody distinctly elevated, convex. Middle portion strongly elevated, usually with distinct longitudinal and/or mediobasal impressions......................................................................................... 3 3 Lateral edges of pronotum with distinct crenulation, sometimes forming indistinct mediolateral angles................. 4 - Lateral edges of pronotum without crenulation.............................................................. 5 4 Pronotum about twice as broad as long, with anterior angles relatively strongly protruded anteriad, from widest middle slightly more narrowed anteriad than posteriad, with slightly concave latero-apical margin and lateral edges, sometimes forming indistinct mediolateral angles; median impressions usually indistinct. Aedeagus as in Figs. 29–30 . Habitus as in Fig. 24 . Body paler, yellow-brown to brown. Body length: 3.05–4.10 mm . South-eastern Europe, Turkey , Caucasus......... ganglbaueri - Pronotum smaller, distinctly less transverse, with anterior angles slightly protruded anteriad, from widest middle relatively evenly narrowed both anteriad and posteriad, without concave latero-apical margin and mediolateral angles; median impressions deep. Aedeagus as in Figs. 38–43 in Shavrin & Smetana (2018) . Habitus as in Fig. 1 in Shavrin & Smetana (2018) . Body darker, brown to black. Body length: 2.10–3.40 mm . Palaearctic species....................................... fusculum 5 Anterior angles of pronotum strongly protruded anteriad...................................................... 6 - Anterior angles of pronotum slightly protruded anteriad...................................................... 7 6 Laterobasal margins of pronotum strongly narrowed posteriad; median pronotal impressions deep. Apical part of median lobe moderately narrow; parameres significantly longer than apex of median lobe ( Figs 10–11 ). Habitus as in Figs 4–5 . Body brown to reddish brown. Body length: 3.20–4.07 mm . Europe, Turkey , Caucasus........................... melanocephalum - Laterobasal margins of pronotum slightly narrowed posteriad; median pronotal impressions shallow.Apical part of median lobe wide; parameres indistinctly exceeding apex of median lobe ( Figs 14, 16 ). Habitus as in Fig. 6 . Body reddish-brown. Body length: 3.55–4.10 mm . North Africa.............................................................. longicorne 7 Body yellowish or yellow-brown. Aedeagus as in Fig. 34h in Zanetti (2012) . Body length: 3.00– 3.50 mm . Europe, Caucasus.............................................................................................. unicolor - Body darker......................................................................................... 8 8 Pronotum without or with indistinct longitudinal impressions. Apical part of median lobe wide....................... 9 - Pronotum with distinct longitudinal impression. Apical part of median lobe moderately narrow...................... 10 9 Punctation of pronotum and elytra moderately fine. Parameres slightly exceeding apex of median lobe, with distinctly broadened preapical parts ( Fig. 27 ). Habitus as in Fig. 22 . Body length: 2.60–3.70 mm . Caucasus........................... tenue - Punctation of pronotum and elytra large and deep. Parameres significantly longer than apex of median lobe, with narrow apical parts ( Fig. 25 ). Habitus as in Fig. 20 . Body length: 3.50–4.90 mm . Portugal , Spain ......................... moczarskii 10 Apical angles of pronotum not or slightly protruded anteriad. Aedeagus elongate, with relatively narrow apical part of median lobe ( Figs. 7–9 and Figs 2, 4–6 in Shavrin (2020)) . Habitus as in Figs 1–3 and Fig. 1 in Shavrin (2020) . Body length: 2.40–3.60 mm . Palaearctic species...................................................................... atrocephalum - Apical angles of pronotum distinctly protruded anteriad. Aedeagus short, with slightly broadened apical part of median lobe ( Fig. 17 ). Habitus as in Fig. 21 . Body length: 3.20–4.15 mm . Syria , Lebanon , Turkey ....................... metallicum