Pterosthetops coriaceus, Bilton, David T., 2014

Bilton, David T., 2014, New species and new records of Pterosthetops: eumadicolous water beetles of the South African Cape (Coleoptera, Hydraenidae), Zootaxa 3811 (4), pp. 438-462 : 454-458

Pterosthetops harrisoni Perkins & Balfour-Browne, 1994

Described from Franschhoek Forest Reserve and Du Toit’s Kloof Pass in the southwest of the Western Cape. Type material labelled as being collected from marginal stream vegetation and on stones and roots in stream through broken granite. Additional records extend the known range north to the Cederberg. All new records from rock faces below springs.

Additional records: September 2002 Western Cape, Bainskloof Pass above Wellington, seepages over rock beside R301 road on north side of pass— 1 ♂; 26/ix/2012 same locality— 1 ♂; 21/ix/2010 Western Cape, Cederberg, Uitkyk Pass, seepages over rock on roadside ( Fig. 5 C)— 1 ♂; 24/ix/2012 same locality— 2 ♂, 1 ♀. Distribution Fig. 9 .

Figures

FIGURE 5. Habitats of Pterosthetops species. A) Cederberg, seepage over sloping rock beside stream @ 1,200 m below Wolfberg Arch, beside Matjiesrivier-Wupperthal road— P. coriaceus sp. nov., P. hawequas, P. impressus; B) Witzenberg, Michell’s Pass, wet rock face along R 46 road - P. baini sp. nov., P. hawequas, P. impressus (arrow indicates larva of Aspidytes niobe Ribera, Beutel, Balke & Vogler, 2002); C) Cederberg, Uitkyk Pass, seepages over rock face beside road— P. harrisoni, P. hawequas, P. impressus, P. pulcherrimus sp. nov., P. tuberculatus sp. nov., P. uitkyki sp. nov.; D) Table Mountain, seepage over rock in Echo Valley— P. equestrius, P. impressus. Photos D T & R Bilton.

FIGURE 9. Distribution of Pterosthetops species in the Western Cape: closed white symbol P. baini sp. nov., blue symbol P. coriaceus sp. nov., green symbols P. harrisoni, open white symbols P. impressus, red triangle P. harrisoni, P. hawequas, P. impressus, P. pulcherrimus sp. nov., P. uitkyki sp. nov. & P. tuberculatus sp. nov. Basemap source: ESri, GigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, Swisstopo and the GIS User Community.