New records of bopyrid parasites (Crustacea, Isopoda, Epicaridea) of pea crabs (Crustacea, Decapoda, Pinnotheridae) with descriptions of two new species of Rhopalione Pérez, 1921 and a review of the genus Author Boyko, Christopher B. Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (United States); and Division of Invertebrate Zoology, American Museum of Natural History, 200 Central Park West, New York, NY, 10024 (United States) cboyko @ amnh. org (corresponding author) cboyko@amnh.org Author Williams, Jason D. Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (United States) jason. d. williams @ hofstra. edu williams@hofstra.edu text Zoosystema 2024 2024-03-22 46 7 149 175 https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2024v46a7.pdf journal article 10.5252/zoosystema2024v46a7 1638-9387 10863451 A7CA7D85-2633-4930-BA12-ACFCB3D0DE21 Rhopalione pelseneeri Pérez, 1920 nomen nudum Rhopalione pelsenseeri Pérez, 1920a: 1617 [ex unidentified pinnotherid crab, Lombok, Indonesia ]. — de Man 1921: 260 [mention]. — Nierstrasz & Brender à Brandis 1923: 68 [list]. — Perkins 1925: 182 [mention]; 1931: 176 [mention]. — Danforth, 1963: 11 . — Page 1985: 199 , 200 [mention]. — McDermott 2009: 790 , 792, table 2 [mention, list]. — An et al. 2014: 2 , table 1 [list]. — Ahyong & Boyko 2019: 286 [discussion of identity]. “ Rhopalione infesting a pinnotherid in Lombok” – Markham 1990: 562 . REMARKS This name has been cited numerous times in the literature, but Pérez (1920a) is the only report on this species and he neglected to provide any description or illustration that might have served to make the name available. This name likely cannot be placed into synonymy with R . uromyzon or R . incerta , given that Pérez saw material of all three “taxa.” Ahyong & Boyko (2019) noted that Pérez (1920a) did not identify the pinnotherid host for this species, but Pérez (1921) thanked J. G. de Man for identifying the host as Pinnotheres arcophilus , a junior subjective synonym of Arcotheres palaensis (Bürger, 1895) . There are no other records of specimens of Rhopalione from this host and the species may be distinct, albeit undescribed.