Mimosticus sharpi

Brunke, Adam & Solodovnikov, Alexey, 2014, Male secondary sexual characters resolve taxonomic uncertainty: five new species and a review of the formerly monotypic rove beetle genus Mimosticus Sharp (Coleoptera: Staphylinidae: Staphylininae), Zootaxa 3893 (1) : -

Sharpi species complex

Three species belong to this species complex and cannot be separated by external morphology. The most reliable characters for their separation are found on male sternite VIII, male sternite IX and male tergite X. Often these characters can be seen in non-dissected males with an extended abdomen. The copulatory sclerite of the internal sac is diagnostically shaped in each species but is more difficult to observe in less-than-ideally prepared specimens. Females cannot as of yet be identified without associated males.