The following two species are synonymized: Dermestes algeriensis Holloway & Herrmann, 2025 (syn. nov.) is a new junior synonym of Dermestes undulatus Brahm, 1790; Dermestes kazakhstanicus Holloway & Herrmann, 2025 (syn. nov.) is a new junior synonym of Dermestes fasciventris Reitter, 1881. A new homonym is proposed and newly named: Dermestes asiaticus Holloway & Herrmann, 2025 is a homonym of Dermestes asiaticus Háva, 2002, the species is newly named as Dermestes paraundulatus Háva, nom. nov. A new status is proposed: Dermestes (Dermestinus) asiaticus Háva, 2002 (stat. nov.) from subspecies Dermestes sardous asiaticus Háva, 2002.