Trichodromeus, Luze, 1903

Shavrin, Alexey V., 2021, Four new species of the genus Trichodromeus Luze, 1903 from Nepal and Pakistan (Coleoptera: Staphylinidae: Omaliinae: Anthophagini), Zootaxa 4991 (2), pp. 353-362 : 361-362

Key to species of Trichodromeus of Nepal

1 Anterior angles of distinctly transverse pronotum slightly protruded apicad. Elytra significantly widened posteriad. Apical part of median lobe strongly protruded apicad ( Fig. 5 ). Body length: 4.50–5.60 mm. Body reddish-brown. Habitus as in Fig. 1............................................................................................ T . acutipenis

- Anterior angles of moderately narrow pronotum not protruded apicad. Elytra slightly widened posteriad. Apical part of median lobe shorter......................................................................................... 2

2 Elytra about as broad as long. Apex of median lobe moderately large, rounded, without excision; parameres slightly exceeding apex of median lobe ( Fig. 7 ). Body larger: 5.35–7.60. Body brown to black. Habitus as in Fig. 2............... T . jaegeri

- Elytra slightly longer than broad. Apex of median lobe small, with narrow excision; parameres significantly exceeding apex of median lobe ( Fig. 9 ). Body smaller: 5.00 mm. Body reddish-brown. Habitus as in Fig. 3.................... T . kaliyuga

Figures

FIGURES 5–10. Aedeagus of Trichodromeus (5–6: T. acutipenis (holotype), 7–8: T. jaegeri (holotype), 9–10: T. kaliyuga (holotype): 5, 7, 9–parameral view, 6, 8, 10 lateral view. Scale bar: 1.0 mm.

FIGURES 1–4. Habitus of Trichodromeus: 1—T. acutipenis (holotype), 2—T. jaegeri (paratype), 3—T. kaliyuga (holotype), 4—T. trilobatus (paratype). Scale bar: 1.0 mm.