New records, one new genus and 21 new species of Callianassidae (Crustacea, Axiidea) from the Indo-West Pacific

Abstract

Poore, G.C.B. 2023. New records, one new genus and 21 new species of Callianassidae (Crustacea, Axiidea) from the Indo-West Pacific. Memoirs of Museum Victoria 82: 167–255. The collections of ghost shrimps from the Indo-West Pacific that contributed to recent molecular phylogeny and resulting reclassification of Callianassidae (Poore et al., 2019; Robles et al., 2020) provide opportunities to review 11 genera and describe one new genus, redescribe existing species and describe 21 new species. Aqaballianassa aqabaensis (Dworschak, 2003), A. brevirostris (Sakai, 2002), A. lewtonae (Ngoc-Ho, 1994) are rediagnosed and Aqaballianassa papua sp. nov. from Papua New Guinea and Aqaballianassa seychellensis sp. nov. from the Seychelles are described as new. Three new species of Caviallianassa Poore, Dworschak, Robles, Mantelatto and Felder, 2019 are compared in a key with Caviallianassa cavifrons (Komai and Fujiwara, 2012): Caviallianassa arafura sp. nov. from the Arafura Sea, Caviallianassa riwo sp. nov. from Papua New Guinea and Caviallianassa moorea sp. nov. from French Polynesia. Callianassa thailandica Sakai, 2005 is treated as species inquirenda. No species of Cheramus Bate, 1888 occurs in the Indo-West Pacific despite the genus name having been widely used. Five species of Coriollianassa Poore, Dworschak, Robles, Mantelatto and Felder, 2019 are recognised and figured: C. sibogae (De Man, 1905), C. coriolisae (Ngoc-Ho, 2014) and new species, Coriollianassa mainbazae sp. nov. and Coriollianassa maputo sp. nov. from the Mozambique Channel, and Coriollianassa nyinggulu sp. nov. from the North West Australian slope. Darryllianassa felderi gen. et sp. nov. is described from Papua New Guinea. Necallianassa nosybeensis sp. nov. is described as a new species from Madagascar. Praedatrypaea Poore, Dworschak, Robles, Mantelatto and Felder, 2019 is rediagnosed. Thirteen species are recognised and most diagnosed; four species are described as new: Praedatrypaea jangamo sp. nov. and Praedatrypaea mozambiquensis sp. nov. from Mozambique, and Praedatrypaea mandu sp. nov. and Praedatrypaea ningaloo sp. nov. from the North West Shelf of Australia. Callianassa malaccaensis Sakai, 2002 is treated as a junior synonym of P. orientalis (Bate, 1888). A key to separate ten species of Praedatrypaea is presented. Pugnatrypaea Poore, Dworschak, Robles, Mantelatto and Felder, 2019 is rediagnosed and confined to three species. Rayllianassa Komai and Tachikawa, 2008 is rediagnosed and its species discussed. Rayllianassa amboinensis (De Man, 1888), a variable species, is rediagnosed; Callianassa ngochoae Sakai, 1999 and Callianassa sahul Poore, 2008 are treated as synonyms. Rayllianassa aurora sp. nov., Rayllianassa bifida sp. nov. and Rayllianassa huonensis sp. nov. are described as new species; the first two are associated with submerged wood at depths greater than 100 m. Rudisullianassa Poore, Dworschak, Robles, Mantelatto and Felder, 2019 is rediagnosed. Rudisullianassa rudisulcus Komai, Fujita and Maenosono, 2014 is discussed and partially illustrated; Rudisullianassa pandan sp. nov. is described as a new species from submerged wood. Spinicallianassa Poore, Dworschak, Robles, Mantelatto and Felder, 2019 is reviewed and a key is provided to five species; three species are described as new: Spinicallianassa bilbili sp. nov. from Papua New Guinea; Spinicallianassa papetoai sp. nov. from French Polynesia; and Spinicallianassa westralia sp. nov. from Western Australia. Callianassa parvula Sakai, 1988 is treated as a possible synonym of S. spinicauda (Komai, Maenosono and Fujita, 2014). Trypaea Dana, 1852 contains only T. australiensis Dana, 1852 and does not occur in the Indo-West Pacific as sometimes reported.