Genus Quadrideres Koch, 1956

Quadrideres Koch, 1956: 189 .— Iwan 1990: 430, 2001: 352, 2002a: 95, 2002b: 295, 2003: 181, 2004a: 541, 2004b: 739, 2006: 79, 2010: 32, 2014: 599; Iwan & Banaszkiewicz 2005: 603, 2007:725; Kamiński & Raś 2011: 647; Kamiński 2013a: 85, 2013b: 502, 2014: 101; Kamiński & Iwan 2013b: 669; Raś & Kamiński 2013: 381.

Type species. Ancholphthalmus scutatus Gerstaecker, 1871 (by original designation); gender masculine.

Species included (20). Q. scutatus species-group: Q. blaszaki Iwan, 2014, Q. elegans Koch, 1956, Q. femineus (Lesne, 1922), Q. lineatus Koch, 1956, Q. luigii Iwan, 2006, Q. modestus (Lesne, 1922), Q. montiskenyae Koch, 1956, Q. schoutedeni Koch, 1956, Q. scutatus (Gerstaecker, 1871), Q. stigmaticollis Koch, 1956, Q.

witteanus Koch, 1956. Q. interioris species-group: Q. interioris (Gebien, 1911), Q. kaszabi Kamiński, 2013, Q. lesnei Koch, 1956, Q. rex Kamiński, 2013, Q. volcanicus Koch, 1956 . Q. simplicipes species-group: Q. kazimierzi sp. nov., Q. parallelus (Ancey, 1877) comb. nov., Q. simplicipes (Gebien, 1910), Q. robynsi Koch, 1956 .