FIGURE 6 in Cave-dwelling crabs of the genus Karstarma from lava tubes of the volcano 'Piton de la Fournaise', in Réunion Island, with description of a new species and redescription of Karstarma jacksoni (Balss, 1934) from Christmas Island (Decapoda, Brachyura, Sesarmidae)

FIGURE 6. Geographic distribution of the 17 or 18 species of Karstarma, from west to east: Karstarma vulcan and K. sp. (Réunion); K. jacksoni (Christmas Island); K. jacobsoni (Central Java); K. malang (East Java, from Wowor & Ng 2018); K. emdi and K. balicum (Nusa Penida Island, sympatric in same cave); K. microphthalmus (South Sulawesi); K. sulu (Palawan Island); K. philippinarum (Boracay Island); K. boholano (Bohol and Tarama Islands); K. cerberus (Ambon Island); K. ardea and K. waigeo (Waigeo Island; sympatric in same cave but in rocky parts for K. ardea and muddy substrates for K. waigeo); K. guamense (Guam Island); K. novabritannia (New Britain Island); K. ultrapes (Nggela Pile Island); K. loyalty (Lifou Island).