Stygofauna of the Canary Islands, 1. A new species of Pygocrangonyx, an amphipod genus with African affinities, from Fuerteventura

A group of exclusively subterranean Amphipoda, the Metacrangonyx group, is distributed mainly in northwestern Africa, with peripheral isolates on the Balearic Islands and in the Sinai desert. The discovery of a new species of this group, belonging to Pygocrangonyx, a genus known from N.W. Morocco only, on Fuerteventura (one of the eastern Canary Islands) is of great biogeographic interest since it supports the theory that this island is of continental rather than oceanic origin.