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Range DescriptionThe Javan warty pig is endemic to Indonesia. Historically the species was present on Java, Madura Island and Bawean Islands; now the species is very fragmented into small pockets of suitable habitat (Grubb 2005). It is extinct on Madura (Semiadi and Meijaard 2006). Two subspecies are recognized. The nominate form, S. v. verrucosus, occurs on Java (and formerly Madura) where it is sympatric with Sus scrofa vittatus. The second subspecies, S. v. blouchi is confined to Bawean Island in the Java Sea where it is also sympatric with Sus scrofa vittatus. This species was widespread on Java as recently as 1982 (Semiadi and Meijaard 2006), but is now absent from most of the island, and is surviving only in highly fragmented populations.