This species is endemic to South Africa. Cape Peninsula (Western Cape) eastwards across Cape Flats to Bredasdorp and Swellendam, and northwards along the Atlantic coast to Port Nolloth in Northern Cape. Occurs inland to Ceres, Worcester and Stellenbosch in the south, and Calvinia, Garies and Kamieskroon in the north, but not in the arid Karoo. One specimen (type of C. damarensis) recorded from Damaraland in Namibia is probably a misidentified specimen from Little Namaqualand (Meester et al. 1986).