SCOPAEINA (Herman, 1991)

Herman, Lee, 2023, Generic Revisions Of The Scopaeina And The Sphaeronina (Coleoptera: Staphylinidae: Paederinae: Lathrobiini), Bulletin of the American Museum of Natural History 2023 (460), pp. 1-195 : 61

KEY TO GENERA OF THE SCOPAEINA

1. Head with trichobothrium in cavity on temple, behind and separated from margin of eye (figs. 267, 282); tropical and subtropical regions of World.............................. Micranops

– Head with trichobothrium in canal or depression and touching dorsal margin of eye (figs. 13–16, 245, 297, 333, 334).............2

2(1).Metakatepisternal process apically acute (figs. 89, 97), longer than wide (figs. 83, 101, 154) or rarely with length and width about equal (fig. 94); metaventrite with stridular file (figs. 104, 115, 119); mesofemur with plectral ridges (figs. 85, 121, 132, 157, 197); widespread in all temperate, subtropical, and tropical regions.................................. Scopaeus

– Metakatepisternal process short, wide, and apically blunt or rounded (figs. 241, 300, 335); metaventrite without stridular file (figs. 251–252, 300–301, 335–336); mesofemur without plectral ridges (figs. 253, 279, 302, 337)....................................................................3

3(2).Trichobothrium adjacent to posterodorsal margin of eye (figs. 297, 309, 315); Canada to Guatemala............................................. Orus

– Trichobothrium adjacent to (fig. 245) or slightly ahead of (figs. 333–334) middorsal margin of eye....................................................4

4(3).Neck petiolate, nuchal groove narrow, about one eighth to one sixth as wide as greatest postocular width of head (fig. 240); Tropical and subtropical regions of Africa, India, southern Asia, Australia......... Hyperscopaeus

– Neck not petiolate, nuchal groove wide, about one third to two fifths as wide as greatest postocular width of head (fig. 342); China, Nepal, India, Thailand, Borneo................................................ Trisunius