Pristoderus Hope, 1840: 145. Type species: Dermestes scaber Fabricius, 1775, by original designation.
Ulonotus Erichson, 1845: 255. No type species included in original description. Type species: Bolitophagus antarcticus White, 1846, subsequent monotypy by Lacordaire 1854: 360. Synonymized with Pristoderus Hope by Ivie and Ślipiński 1990: 9.
Sparactus Erichson, 1845: 256. Type species: Ditoma interrupta Erichson, 1842, by monotypy. Synonymized with Pristoderus Hope by Ślipiński and Lawrence 1997: 406.
Pristiderus: Agassiz 1846: 135. Incorrect subsequent spelling, not available.
Enarsus Pascoe, 1866: 444. Type species: Enarsus bakewellii Pascoe, 1866, fixed by monotypy. Synonymized with Pristoderus Hope by Ślipiński and Lawrence 1997: 406.
Tarphiomimetes Wollaston, 1873: 9. Type species: Tarphiomimetes lawsoni Wollaston, 1873, designated by Ivie and Ślipiński 1990: 9. Synonymized with Ulonotus Erichson by Sharp 1876: 17.
Dryptops Broun, 1882: 292. Type species: Dryptops dorsalis Broun, 1882, designated by Ivie and Ślipiński 1990: 8. Synonymized with Pristoderus Hope by Ślipiński and Lawrence 1997: 406.
Recyntus Broun, 1882: 293. Type species: Ulonotus tuberculatus Broun, 1880, by original designation. Synonymized with Pristoderus Hope by Ślipiński and Lawrence 1997: 406.
Remarks: The genus Pristoderus was removed from synonymy and recognized as valid by Ivie and Ślipiński (1990: 9), stating: “This senior synonym of Ulonotus cannot be suppressed, and is the proper name of the genus currently known as Ulonotus. ” Pascoe (1876: 51) stated that Fabricius’ Dermestes scaber is congeneric with White’s Pristoderus antarcticus and Erichson’s Ulonotus was probably based on one of these two species, although Erichson did not formally describe any species when he erected the genus. Sharp (1876: 17) stated that the name Pristoderus Hope “may be with advantage dropped into oblivion” due to lack of characters provided by Hope for the genus.