Parasites (Isopoda: Epicaridea and Nematoda) from ghost and mud shrimp (Decapoda: Axiidea and Gebiidea) with descriptions of a new genus and a new species of bopyrid isopod and clarification of Pseudione Kossmann, 1881 Author Boyko, Christopher B. Author Williams, Jason D. Author Shields, Jeffrey D. text Zootaxa 2017 2017-12-19 4365 3 251 301 journal article 31134 10.11646/zootaxa.4365.3.1 506d11e3-029a-482b-ad11-cff65e539fa9 1175-5326 1117980 C5AC71E8-2F60-448E-B50D-22B61AC11E6A Pseudione longicauda Shiino, 1937 Pseudione longicauda Shiino, 1937 : 479 –482, figs. 1, 2 ( type locality: Seto, Japan , infesting Callianassa subterranea var. japonica Ortmann, 1891 = Nihonotrypaea japonica (Ortmann, 1891)) .— Shiino, 1952 : 41 , 43 (mention).— Shiino, 1958 : 30 –31, fig. 1, pl. 3, fig. 1 (Sugashima, Mie Prefecture , Japan , infesting N . japonica ).— Danforth, 1963a : 10 (list).— Danforth, 1963b : 849 (mention).— Shiino, 1964b : 242 (mention).— Bourdon, 1968 : 150 , 172, 214–216 (mention).— Restivo, 1970 : 314 (mention).— Shiino, 1972 : 7 (list).— Bourdon, 1981a : 628 (mention).— Bourdon, 1981b : 116 (mention).—Bourdon et al ., 1981: 498 (mention).— Markham, 1992b : 277 , 281–282, figs. 4, 5 ( Hong Kong , infesting N . petalura (Stimpson, 1860)) .— Page, 1985 : 194 , 196 (mention).— Huang, 1994 : 530 (list).— Adkison & Heard , 1995 : 108 – 109 (mention).— Saito et al ., 2000 : 37 (list).— Huang, 2001 : 326 (list).— Markham, 2001 : 198 , 200 (list).— Li, 2003 : 140 , 155, 158 (list).— Itani, 2004b : 38 , tables 3, 4 ( Japan , infesting Nihonotrypaea harmondi (Bouvier, 1901) , N . japonica , N . petalura , Paratrypaea bouvieri (Nobili, 1904)) .— Saito & Kinoshita, 2004 : 2 (mention).— Shimoda et al ., 2005 : ( Japan , infesting N . japonica and N . petalura ).— Yu & An, 2008 : 693 (list).—An et al ., 2009: 226–227, fig. 1 ( Shandong and Fujian Provinces, China , infesting N . japonica ).—Boyko et al ., 2013: 499 (placement on phylogenetic tree).— Miura et al ., 2014 : 30 –32 (including table), fig. 1 A ( Japan , infesting N . japonica ).— An et al ., 2015 : 12 (list). ? “parasit bopyrid” Wardiatno, 2004 : 81–84 (Japan, infesting N . japonica ; see Remarks). Material examined. Japan : Ovigerous female ( 10.5 mm , right 1/3 of body sacrificed for molecular work), mature male ( 2.8 mm ), ex left branchial chamber of Nihonotrypaea japonica ( 7 mm CL, lacking gonopores), Stn 4, 32°47'N 130°36'E , Shirakawa River , Kumamoto , coll. A. Tamaki , 5 Apr 2004 ( ULLZ 5471 ) ; ovigerous female ( 8.5 mm , left ½ sacrificed for molecular work), mature male ( 2.7 mm ), ex right branchial chamber of Nihonotrypaea cf. petalura ( 10.6 mm CL, lacking gonopores), Sample #14, Ariakemachi, coll. A . Tamaki ( ULLZ 11653 ) . Distribution . Japan ; Hong Kong ; Shandong , Fujian , and Hainan Provinces, China . Hosts . Nihonotrypaea harmondi (Bouvier, 1901, N . japonica (Ortmann, 1891) ( type species), N . petalura (Stimpson, 1860) , and Paratrypaea bouvieri (Nobili, 1904) . Remarks . This species belongs to Pseudione sensu stricto (as defined by the resolution of the identity of the type species herein). An et al . (2009) included Saito & Kinoshita (2004: 1–7, figs. 3, 4) in their synonymy list for P . longicauda ; however, Saito & Kinoshita (2004) correctly identified their material as Ione cornuta Bate, 1864 . Both of the females discussed herein were used to generate 18S rDNA data for the phylogenetic analysis of Boyko et al . (2013) but were erroneously reported in the Supplemental File as being from the same lot. The specimens studied by Wardiatno (2004) were never named or figured; they are likely either this species or I . cornuta , as these are the only species known from Nihonotrypaea japonica .