Distribution

The genus distribution is considered to circumscribe the Mediterranean Basin; however, the occurrences are skewed to the west with extant species ranging from Morocco to Algeria and Tunisia in North Africa (World Wildlife Fund & Hogan, 2007); and the Iberian Peninsula, to France and Italy in Europe. The species D. nigriventer is the sole taxon present in the Middle East, occurring in Israel and possibly Syria (Disi et al. 2012). No extant genus populations occur in Greece, Croatia, Turkey, Lebanon, Egypt, Libya.