Anthophagus sinuatus, Sharp, 1889

Shavrin, Alexey V., 2022, The plagiatus species group of the genus Geodromicus Redtenbacher, 1857 (Insecta Coleoptera: Staphylinidae: Omaliinae), and additional data on some species from Japan, Zootaxa 5188 (5), pp. 401-429 : 422

Sinuatus group

Diagnosis. Body medium-sized (4.9–6.5 mm), with slightly transverse pronotum and moderately wide elytra slightly longer than broad; aedeagus with very wide median lobe and narrow parameres extending beyond apex of median lobe, internal sac with moderately short and sclerotized flagellum.

Species included. G. sinuatus ( Sharp, 1889) , G. suensoni Bernhauer, 1936 .

Distribution. Species of the sinuatus group are distributed in North and Central Japan: Hokkaido and Honshu islands.

Bionomics. Detailed bionomic data are unknown.

Remarks. In the presence of a strongly sclerotized flagellum, the sinuatus group is somewhat similar to the plagiatus and aokii groups, but differs by having a significantly broader median lobe. In the narrow parameres, it is similar to the aokii group, but differs by a larger body and broader elytra.