Thoracophorus, Motschulsky, 1837

Ferro, Michael L., 2015, Review Of The Genus Thoracophorus (Coleoptera: Staphylinidae: Osoriinae) In North America North Of Mexico, With A Key To Species, The Coleopterists Bulletin 69 (1), pp. 1-10 : 2

DIAGNOSIS OF THORACOPHORUS

Throughout North America north of Mexico, Thoracophorus can be distinguished from other Staphylinidae by the following combination of characters: abdominal tergum and sternum of each of segments III–VII fused into complete ring; protibia with inner edge straight, without ctenidium; procoxae contiguous; procoxal fissure closed; trochantin concealed; elytra costate; abdominal sternum VIII extended dorsally in front of tergum VIII (Newton et al. 2001).