DistributionRead full entry
Range DescriptionThis species is considered endemic to the Mediterranean, where it is apparently restricted to Sicily (Europe) and Tunisia (North Africa). The species is restricted to cold water in brooks and springs of Sicily and north-western Tunisia. In Sicily the species is known from 14 locations from north and south streams/springs, and as such is thought occupy an area of 500 km². In Tunisia van Damme and Ghamizi suggested that a conservative estimate of the area of occupancy should be about 50 to 100 km² maximum, where it was present in less than five sites.