Taxonomic Changes in Nearctic Paederinae, New Records and a Redescription of the Enigmatic Genus Acrostilicus Hubbard (Coleoptera: Staphylinidae) Author Brunke, Adam J. Author Schnepp, Kyle E. text The Coleopterists Bulletin 2021 2021-12-31 75 4 883 894 http://dx.doi.org/10.1649/0010-065x-75.4.883 journal article 10.1649/0010-065X-75.4.883 1938-4394 13252228 urn:lsid:zoobank.org:pub:53B7F918-EEA4-46AD-B683-155AB21724D2 Dacnochilus compactus ( Casey, 1905 ) Acalophaena compacta Casey 1905: 146 . Paederopsis gloydi Kistner 1955: 1 . New synonym . Dacnochilus compactus : Jiménez-Sánchez and Galián 2013 (redescription). Type Material. Paratype (female, FMNH , head mounted on separate slide): “ Wickenburg : Maricopa Co. , Ariz., 28.VIII.51/ light trap / Coll. H.K. Gloyd , leg./[female symbol]/mouthparts on slide P-1/ Paederopsis gloydi Kistner Paratype [red label]/ FMNHINS 4087760, FIELD MUSEUM, Pinned [QR code label]/ Dacnochilus compactus (Casey) Det. A. Brunke 2021 ” . Note on Type Material. Paederopsis gloydi was described based on a female holotype and two female paratypes . We examined one of the female paratypes , which corresponded well to the description by Kistner (1955) and displayed the following character states: disc of pronotum and elytra without macrosetae; elytron with epipleural carina; head (from description) and pronotum concolorous pale red-brown; pronotum very transverse (approximately 1.60 times wider than long). We therefore conclude that this species belongs in Dacnochilus and is morphologically indistinguishable from D. compactus , sensu Jiménez-Sánchez and Galián (2013) , who studied a female syntype from Arizona . Diagnosis. This species can be easily recognized among Nearctic Dacnochilus by a combination of: uniformly red body; labrum with paired teeth; elytra without discal rows of punctures; elytron with epipleural carina. Distribution. United States : AZ, CA, NV. Mexico : Baja California . Comments. When describing P. gloydi , Kistner (1955) was apparently unaware of the distinctive genus Acalophaena (now a synonym of Dacnochilus ). An examination of the type material showed that this species was identical with D. compactus . Therefore, the genus Paederopsis is removed from the Nearctic fauna, though an examination of the Brazilian type species is needed to confirm whether this genus is a synonym of Dacnochilus .