Dytiscidae

Bilton, David T., 2017, Water beetles from the Bokkeveld Plateau: a semi-arid hotspot of freshwater biodiversity in the Northern Cape of South Africa, Zootaxa 4268 (2), pp. 191-214 : 209-210

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.