Hydraenidae

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 : 211-213

Hydraenidae

* Nucleotops interceps Perkins, 2004

Described from the Western Cape Province. Sites 2, 4 & 8.

Prosthetops wolfbergensis Bilton, 2013

One of the largest hydraenids on earth, known from the Western and Northern Cape provinces. Sites 1, 12 & 13.

Pterosthetops hawequas Perkins, 2008

Widespread in the Western and Northern Cape provinces ( Bilton 2014b). Sites 1, 2, 4, 9, 12 & 13.

* Mesoceration foggoi Bilton, 2015

Described from the nearby Gifberg-Matsikammaberg massif. Sites 12–14

Mesoceration hantam Bilton, 2014

Described from the Hantamsberg, but clearly more widespread in the Bokkeveld. Sites 11–13.

* Mesoceration longipennis Perkins, 2008

Described from close to the Gifberg in the Western Cape. Common in Sites 10, 11 & 12.

* Mesoceration rufescens Perkins & Balfour-Browne, 1994 Described from the Western Cape Province. Site 12.

Mesoceration cf. semicarinulum Perkins, 2008

A member of the barriotum group, most likely this species. Sites 5–7.

Mesoceration umbrosum Perkins, 2008

Described from the nearby Gifberg-Matsikammaberg and adjacent areas in the Western Cape ( Bilton 2015a). Sites 1 & 12.

* Parasthetops benefossus Perkins, 2008

Described from widely separated localities in the Western Cape Province, this species was abundant where found on the Bokkeveld. Sites 5, 6 & 12.

Parasthetops curidius Perkins & Balfour-Browne, 1994

A relatively widespread South African endemic. Sites 1 & 3.

* Parasthetops nigritus Perkins & Balfour-Browne, 1994

Widespread in the Western Cape Province. Sites 2 & 4.

Parasthetops pampinus Perkins, 2008

Recorded from the Hantamsberg by Bilton (2014a). Sites 5, 7 & 8.

* Parasthetops rufulus Perkins & Balfour-Browne, 1994

Described from the Western and Eastern Cape provinces. Site 11.

* Coelometopon blinkwater Perkins, 2005

The most common and widespread species of the genus in the Western Cape, newly reported here from the Northern Cape Province. Site 9.

* Hydraena cooperi J. Balfour-Browne, 1954

A widespread southern African species, occurring north to Namibia ( Perkins 2014), but not previously reported from the Northern Cape. Sites 1, 4 & 11.

* Hydraena bicarina Perkins, 2014

Described from the Gifberg in the Western Cape. Sites 1, 7, 12 & 14.

Discozantaena endroedyi Perkins, 2005

Reported from the Hantamsberg by Bilton (2014a). Sites 4, 5, 6, 11, 12 & 14.

Parhydraena faeni Bilton, 2014

Described from the Hantamsberg, but clearly more widespread on the Bokkeveld. Sites 5, 7 & 8.

* Parhydraena maureenae Perkins, 2009

Described from the Western Cape Province. Site 5.

Parhydraena namaqua Perkins, 2009

Known only from the Bokkeveld ( Perkins 2009; Bilton 2014a), where it is the commonest species of the genus. Sites 1–3, 5–9 & 11–14.

* Pneuminion endroedyi Perkins, 2004

Described from the Western Cape. Site 13.

Pneuminion velamen Perkins, 1997

The most abundant and widespread species of the genus in the Cape. Sites 1, 2, 5, 8, 9, 13 & 14.

Ochthebius andronicus d’Orchymont, 1948

A widespread Afrotropical species, found throughout South Africa. Sites 1, 4 & 5–7.

Ochthebius pedalis J. Balfour-Browne, 1954

Known from the Western Cape to Namibia, in saline water. Site 3.

Ochthebius spatulus J. Balfour-Browne, 1954

Eastern, Northern and Western Cape provinces, in saline waters. Site 3.

Ochthebius spinasus Perkins & Balfour-Browne, 1994

Known from the Eastern Cape through to Namibia, in saline waters. Site 3.