New species and new records of Pterosthetops: eumadicolous water beetles of the South African Cape (Coleoptera, Hydraenidae) Author Bilton, David T. text Zootaxa 2014 3811 4 438 462 journal article 45587 10.11646/zootaxa.3811.4.2 dad75c9b-1930-47fb-ba79-eb519a90c45a 1175-5326 253023 99629EFB-F2F6-4DE8-AABA-D71069106912 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. 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 R46 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 6. Habitats of Pterosthetops species. A) Middelberg Pass, seepages over rock with algae on R303 road above Blinkwater— P. hawequas , P. tuberculatus sp. nov. ; B) Franschhoekpas, 500 m wet rock face formed by stream beside R45 road— P. hawequas , P. impressus , P. tuberculatus sp. nov. ; C) View along Great Escarpment from Vanrhyns Pass— P. hawequas was abundant on seep below tree at bottom left of photo. Photos D T Bilton. FIGURE 7. Habitats of Pterosthetops species. A) Swartberg, seepage on sloping rock face beside R328 road, north of Swartberg Pass, 2 km N of junction with Gamkaskloof road— P. br i nc k i , P. swartbergensis sp. nov. Seepage dry, January 2014; B) Cederberg, seepage at top of Uitkyk pass— P. hawequas , P. tuberculatus sp. nov. C) Cederberg, view from summit of Uitkyk Pass. Photos D T Bilton & A Foggo. FIGURE 8. Distribution of Pterosthetops species in the Western Cape: red symbols P. br i nc k i , green symbols P. equestrius , yellow symbols P. hawequas , white symbols P. indwei sp. nov. , blue symbol P. swartbergensis sp. nov. Basemap source: ESri, GigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, Swisstopo and the GIS User Community. 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 .