Water beetles from the Bokkeveld Plateau: a semi-arid hotspot of freshwater biodiversity in the Northern Cape of South Africa Author Bilton, David T. text Zootaxa 2017 4268 2 191 214 journal article 33044 10.11646/zootaxa.4268.2.2 00fa23ba-e0e6-4a1a-959c-7192b134caf2 1175-5326 580190 61A285A2-F1E8-43F1-AEA8-9E64D3450108 Dytiscidae Agabus ruwenzoricus Guignot, 1936 Widespread in central, eastern and southern Africa , mostly in streams and rivers. In the Cape of South Africa this species occurs north to the Kamiesberg ( Bilton, 2013 ). Sites 5 & 14. Rhantus capensis (Aubé, 1838) A widespread southern and eastern African species, mainly in standing water and pools in streams. Site 1. * Rhantus cicurius (Fabricius, 1787) An endemic of the winter rainfall region, previously reported from the Western and Eastern Cape provinces only. Sites 6 & 7 represent the most northerly confirmed records of this species. * Copelatus capensis Sharp, 1882 Relatively widespread, but endemic to South Africa and Lesotho . Site 14. Cybister tripunctatus africanus Laporte, 1835 Very widespread, from the western Mediterranean, throughout the Afrotropics. Site 1. Eretes sticticus (Linnaeus, 1767) Widespread across a number of biogeographical regions ( Miller, 2002 ). Site 3. Hydaticus capicola Aubé, 1838 A widespread Afrotropical species. Site 14. Hydroglyphus lineolatus (Boheman, 1848) Recorded from Malawi to South Africa. Sites 3, 4 & 6. Canthyporus aenigmaticus Biström & Nilsson, 2006 Some records from the Bokkeveld discussed by Bilton (2015b) . Sites 4, 7 & 13. * Canthyporus canthydroides (Régimbart, 1895) A Cape endemic, previously reported from the Western and Eastern Cape provinces. Site 1. Canthyporus exilis (Boheman, 1848) Record from the Bokkeveld discussed by Bilton (2015b) . Site 2. * Canthyporus guignoti Omer-Cooper, 1965 Recorded from Eastern Cape, Mpumalanga and Western Cape provinces ( Biström & Nilsson 2006 ). Sites 5 & 12. Canthyporus hottentottus (Gemminger & Harold, 1868) A relatively common species known from Eastern , Northern and Western Cape provinces. Sites 5 & 7. * Canthyporus lateralis (Boheman, 1848) Previously reported from the Western Cape ( Biström & Nilsson, 2006 ). Sites 1, 12–14 Canthyporus pallidus Bilton, 2015 Some records from the Bokkeveld discussed by Bilton (2015b) . Sites 2 & 9. * Canthyporus petulans Guignot, 1951 A widespread species in South Africa, most common in the winter rainfall zone. Sites 1, 5–8, 9, 12–14. * Nebrioporus capensis (Omer-Cooper, 1953) Previously reported from the Western and Eastern Cape provinces. Sites 3 & 12. Herophydrus inquinatus (Boheman, 1848) A widespread Afrotropical species, common in the Cape . Sites 1 & 3. Hydropeplus montanus Omer-Cooper, 1965 A Cape endemic, reported from the Western and Northern Cape provinces ( Bilton, 2014a ). Sites 7 & 12. * Hydropeplus trimaculatus (Laporte, 1835) Previously recorded only from the Western and Eastern Cape provinces. Sites 1, 5–7 & 14. At Site 7 the species co-occurred with H. montanus . Laccophilus lineatus Aubé, 1838 A widespread southern African species, common in the Cape . Site 11.