Anthobium tectum (Paykull, 1789) Shavrin, 2022

Shavrin, Alexey V., 2022, A revision of Palaearctic Anthobium Leach, 1819 (Coleoptera: Staphylinidae Omaliinae: Anthophagini). V. Algidum, morosum and tectum groups, a new species of the fusculum group, and faunistic records, Zootaxa 5104 (3), pp. 301-346 : 315

Key to species of the tectum group

1 Lateroapical angles of pronotum distinctly protruding anteriad................................................. 2

- Lateroapical angles of pronotum not or indistinctly protruding anteriad........................................... 3

2 Pronotum twice as broad as long. Median lobe wide ( Fig. 67 ). Body length: 2.80–4.50 mm. Habitus as in Fig. 82 . Siberia.............................................................................................. A. frigidum

- Pronotum distinctly less than twice as broad as long. Median lobe narrow ( Fig. 99 ). Body length: 4.20 mm. Habitus as in Fig. 95 . Tajikistan............................................................................ A. tichomirovae

3 Elytra about as long as broad or slightly longer.............................................................. 4

- Elytra slightly broader than long......................................................................... 7

4 Mediobasal third of pronotum with indistinct semicircular impression.Apical portions of parameres very wide ( Fig. 103 ). Body length: 3.10 mm. Habitus as in Fig. 97 . Nepal........................................................ A. vitreum

- Mediobasal third of pronotum without impression. Apial portions of parameres narrow or relatively wide............... 5

5 Pronotum slightly more narrowed posteriad than anteriad. Apical portion of median lobe gradually narrowed toward rounded apex ( Fig. 87 ). Body length: 2.65–3.25 mm. Habitus as in Fig. 4 . Nepal............................... A. himalayense

- Pronotum evenly narrowed both anteriad and posteriad. Apical portion of median lobe wide, with truncate apex.......... 6

6 Median lobe wide; parameres moderately short, slightly exceeding apex of median lobe ( Fig. 63 ). Body length: 2.70–4.50 mm. Habitus as in Fig. 2 . Trans-Palaearctic............................................................... A. tectum

- Median lobe narrow; parameres long significantly exceeding apex of median lobe ( Fig. 65 ). Body larger: 3.40–3.60 mm. Habitus as in Fig. 3 . China: Sichuan ............................................................... A. cornatipenis

7 Body with bluish reflex in middle of head, neck and medioapical portion of pronotum. Aedeagus as in Fig. 89 . Body length: 2.81–3.35 mm. Habitus as in Fig. 5 . China: Sichuan ............................................ A. multipunctatum

- Body without bluish reflex.............................................................................. 8

8 Antennomeres 6–10 elongate. Median lobe moderately wide ( Fig. 91 ). Body length: 3.15–3.90 mm. Habitus as in Fig. 94 . China: Xizang ................................................................................ A. smetanai

- Antennomeres 6–10 slightly transverse. Median lobe very wide ( Fig. 101 ). Body smaller: 3.00 mm. Habitus as in Fig. 96 . China: Yunnan .............................................................................. A. umbrinum

Figures

FIGURES 63–68. Aedeagus of Anthobium tectum (Figs. 63–64; Finland, Kuhmo), A. cornatipenis (Figs. 65–66; holotype) and A. frigidum (Figs. 67–68; syntype): 63, 65, 67—parameral view, 64, 66, 68—lateral view. Scale bar: 0.1 mm.

FIGURES 82–85. Anthobium frigidum: 82—habitus of cotype, 83—labels of cotype, 84–85—aedeagus, parameral view (Fig. 84: Krasnoyarsk Territory, Goroshikha; Fig. 85: Krasnoyarsk Territory, Yeloguy). Scale bar: 1.0 mm (Fig. 82), 0.1 mm (Figs. 84–85).

FIGURES 99–104. Aedeagus of Anthobium tichomirovae (Figs. 99–100; holotype), A. umbrinum (Figs. 101–102; holotype) and A. vitreum (Figs. 103–104; holotype): 99, 101, 103—parameral view, 100, 102, 104—lateral view. Scale bar: 0.1 mm.

FIGURES 94–98. Habitus of species of the Anthobium tectum group: 94—A. smetanai (holotype), 95—A. tichomirovae (holotype), 96—A. umbrinum (holotype), 97—A. vitreum (holotype), 98—A. infractum (holotype). Scale bar: 1.0 mm.

FIGURES 87–92.Aedeagus of Anthobium himalayense (Figs. 87–88; paratype), A. multipunctatum (Figs. 89–90; holotype) and A. smetanai (Figs. 91–92; paratype): 87, 89, 91—parameral view, 88, 90, 92—lateral view. Scale bar: 0.1 mm.

FIGURES 1–5. Habitus of species of Anthobium: 1—A. algidum (Austria, Innsbruck), 2—A. tectum (Russia, Buryatia), 3—A. cornatipenis (paratype), 4—A. himalayense (holotype), 5—A. multipunctatum (holotype). Scale bar: 1.0 mm.