Canthyporus nebulosus Omer-Cooper

Bilton, David T., 2015, A review of the Canthyporus exilis group, with the description of two new species (Coleoptera: Dytiscidae), Zootaxa 3957 (4), pp. 441-454 : 452

Canthyporus nebulosus Omer-Cooper

The most widespread member of the group, known from Kwazulu-Natal and both the Eastern and Western Cape provinces ( Biström & Nilsson 2006). A characteristic species of seepages flowing over rock (madicolous habitats—see Bilton 2014; Vaillant 1956), also found in stream margins, and in small temporary pools: September 2002 & 26/ix/2012 Western Cape, Bainskloof Pass above Wellington, seepages over rock beside R301 road on north side of pass (abundant); 23/ix/2009 Western Cape, Garden Route National Park, madicolous seepage beside Salt River nr. Nature’s Valley (abundant); 24/ix/2009 & 1/i/2014 Western Cape, Groote Swartberg, stream on R328 2 km N of De Top (abundant); 24/ix/2009 Western Cape, Groote Swartberg, madicolous seepages beside R328, 2 km N of Gamkaskloof turning (abundant); 25/ix/2009 & 25/ix/2010 Western Cape, Franschhoek Pass, wet rock faces beside R45 (abundant); 26/ix/2008, 27/ix/2009, 22/ix/2011 & 26/ix/2012 Western Cape, Mitchell’s Pass nr. Ceres, seepages over rock (abundant); 21/ix/2010, 24/ix/2012 & 22/ix/2014 Western Cape, Cederberg, Uitkyk Pass, seepages over rock face beside road (abundant); 19/ix/2008 & 23/ix/2010 Western Cape, Table Mountain National Park, Silvermine, seepages over rock beside M64 (abundant); 23/ix/2010 Western Cape, Table Mountain National Park, seepage over rock beside M66 at Red Hill above Simonstown (1♀); 24/ix/2010 Western Cape, Table Mountain National Park, Table Mountain, seepage over rock in Echo Valley (abundant); 23/ix/2011 & 23/ix/2012 Western Cape, Cederberg, seepages over sloping rock beside stream at 1,200 m below Wolfberg Arch, beside Matjiesrivier-Wupperthal road (abundant); 23/ix/2011 Western Cape, Cederberg, stream in Gabriel’s Pass below Wolfberg Arch (abundant); 24/ix/2011, 25/ix/2012 & 4/x/2013 Western Cape, Cederberg, Algeria Waterfall, wet rock seepages (abundant); 1/i/2014 Western Cape, Groote Swartberg, stream on S side of pass below Oliewenberg (abundant on wet rock face); 3/i/2014 Western Cape, Outeniquaberg, wet rock faces in Robinson Pass (abundant).