New Anthuroidea (Crustacea, Isopoda) from Northern Sulawesi (Indonesia) and a revised classification of the Haliophasma and Apanthura groups

From a collection of IsopodaAnthuroidea the new species Eisothistos minahasaensis sp. nov ., Mesanthura ratulangii sp. nov ., Mesanthura heliolatra sp. nov ., Haliophasma annaclericiae sp. nov ., Apanthuretta markuslasuti sp. nov ., Apanthuretta pinchans sp. nov ., Amakusanthura mamuajae sp. nov ., and Apanthurella cuspidobtusa gen. nov. et sp. nov . are described. The species were found in near-shore samples of coral rubble and sediment in North Sulawesi (Indonesia). The genus Haliophasma Haswell, 1881 is compared with Malacanthura Barnard, 1925 and the genus Exanthura Barnard, 1914 is reinstalled to accommodate species with a basal hook on the A1. Nemanthura Wägele, 1981 is synonymized with Exanthura Barnard, 1914. A new classification of the Apanthura group, including the diagnosis of the new genus Apanthurella gen. nov ., is provided together with lists of hitherto described species. Diagnoses for the genera Haliophasma , Malacanthura , Exanthura , Apanthura , Apanthuretta , Apanthuropsis , Amakusanthura , and Apanthurella are presented.