Abstract
Three new species of the parasitic isopod subfamily Hemiarthrinae Markham, 1972 are described. Allodiplophryxus unilateralis n. sp. is described from Western Australia, infesting the palaemonid shrimp Jocaste lucina (Nobili, 1901), and females differ from the only other species in the genus in possessing six pleomeres, an asymmetrical first oostegite and pleopods restricted to the short side of the body. Loki athanus n. sp. is described from Madagascar, infesting the alpheid shrimp Athanas parvus de Man, 1910, and females differ from the only other species in the genus in possessing well-developed lateral plates on pleomere 4 and four pairs of uniramous pleopods. Hemiarthrus alphei n. sp. is described from French Polynesia, infesting the alpheid shrimp Alpheus crinitus Dana, 1852, and females differ from the four other known Hemiarthrus species in having pleomeres with well-developed, symmetrical lateral plates, a barbula with three pairs of projections and a pointed pleotelson. Keys to species of Hemiarthrus and all genera of the Hemiarthrinae are presented.
References
An, J., Boyko, C.B. & Li, X. (2015) A review of bopyrids (Crustacea: Isopoda: Bopyridae) parasitic on caridean shrimps (Crustacea: Decapoda: Caridea) from China. Bulletin of the American Museum of Natural History, 2015 (399), 1–85.
https://doi.org/10.1206/amnb-921-00-01.1
Barnard, K.H. (1955) Additions to the fauna-list of South African Crustacea and Pycnogonida. Annals of the South African Museum, 43, 1–107.
Bonnier, J. (1900) Contribution à l'étude des Épicarides. Les Bopyridae. Travaux de l’Institut Zoologique de Lille et du Laboratoire de Zoologie Maritime de Wimereux, 8, 1–476, pls. 1–41.
https://doi.org/10.5962/bhl.title.10522
Boyko, C.B. (2012) Description of an exceptionally large new species of Diplophryxus (Crustacea: Isopoda: Bopyridae) from a Chilean alpheid (Crustacea: Decapoda: Alpheidae), with a new genus for D. richardsonae Chopra, 1930. Proceedings of the Biological Society of Washington, 125 (2), 145–152.
https://doi.org/10.2988/12-03.1
Boyko, C.B. & Williams, J.D. (2004) New records of marine isopods (Crustacea: Peracarida) from the Bahamas, with descriptions of two new species of epicarideans. Bulletin of Marine Science, 74 (2), 353–383.
Boyko, C.B., Bruce, N.L., Hadfield, K.A., Merrin, K.L., Ota, Y., Poore, G.C.B., Taiti, S., Schotte, M. & Wilson, G.D.F. (Eds.) (2008 onwards) World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Hemiarthrinae Markham, 1972. Accessed through: World Register of Marine Species. Available from: http://www.marinespecies.org/aphia.php?p=taxdetails&id=589331 (accessed 15 June 20202)
Bruce, A. (1965) An interesting new phryxid (Epicaridea) parasitic on a pontoniinid shrimp. Journal of Natural History, 8 (91), 385–390.
https://doi.org/10.1080/00222936508651584
Bruce, A. (1972a) Orophryxus shiinoi gen. nov., sp. nov., an unusual phryxid (Crustacea, Isopoda, Bopyridae) parasitic upon a pontoniid shrimp from Zanzibar. Parasitology, 64 (3), 445–450.
https://doi.org/10.1017/S0031182000045510
Bruce, A. (1972b) Filophryxus dorsalis gen. nov., sp. nov., an unusual bopyrid parasite from eastern Australia. Parasitology, 65 (2), 351–358.
https://doi.org/10.1017/S0031182000045133
Bruce, A.J. (1973) Mesophryxus ventralis gen. nov., sp. nov., a phryxid bopyrid parasitic upon the pontoniid shrimp Hapiliopsis beaupresi (Audouin). Parasitology, 66, 515–523.
https://doi.org/10.1017/S0031182000046060
Bruce, A.J. (1978) A new name, Hemiphryxus proposed for the preoccupied name Allophryxus Bruce, 1974 (Isopoda, Bopyridae). Crustaceana, 35, 106.
https://doi.org/10.1163/156854078X00321
Bruce, A.J. (2007) Neophryxus, a new name for Prophryxus Bruce, 1973 (Crustacea: Isopoda: Bopyridae). Zootaxa, 1646, 67–68.
https://doi.org/10.1080/00222936508651584
Caroli, E. (1930) Notizia di tre specie nuove ed una poco nota di bopiridi addominali, parassiti di caridei del golfo di Napoli (contributo alla conoscenza del genere Phrixus Rathke). Bollettino della Società Naturalisti in Napoli, 41 (9), 258–269.
Caroli, E. (1949) Breve rassegna dei Bopiridi addominali parassiti di Caridei. Pubblicazioni della Stazione Zoologica di Napoli, 21, 232–235.
Chopra, B. (1923) Bopyrid isopods parasitic on Indian Macrura. Records of the Indian Museum, 25 (5), 411–550.
Giard, A. (1907) Sur l'Anisarthrus pelseneeri (nov. gen. et nov. sp.) bopyrien parasite d'Athanas nitescens Leach et sur la synonymie du genre Hemiarthrus. Comptes rendus de la Societe de Biologie, Paris, 63 (2), 321–324.
Giard, A. & Bonnier, J. (1887) Contributions à l’étude des bopyriens. Travaux de l’Institut Zoologique de Lille et du Laboratoire de Zoologie Maritime de Wimereux, 5, 1–272.
https://doi.org/10.5962/bhl.title.64223
Krøyer, H. (1840) Bopyrus abdominalis. Naturhistorisk Tidsskrift, Series I, 3 (1), 102–112.
Markham, J.C. (1972) Two new genera of western Atlantic abdominally parasitizing Bopyridae (Isopoda, Epicaridea), with a proposed new name for their subfamily. Crustaceana, Supplement, 39–56.
Markham, J.C. (1985) A review of the bopyrid isopods infesting caridean shrimps in the northwestern Atlantic Ocean, with special reference to those collected during the Hourglass Cruises in the Gulf of Mexico. Memoirs of the Hourglass Cruises, 8, 1–156.
Markham, J.C. (1990) Crustacea Isopoda: new records of Bopyridae from New Caledonian waters. In: Crosnier, A. (Ed.), Résultats des Campagnes MUSORSTOM. Mémoires du Muséum National d'Histoire Naturelle, Paris, 6 (A), 145, pp. 55–69.
Markham, J.C. (1992) Second list of additions to the Isopoda Bopyridae of Hong Kong. In: Morton, B.S. (Ed.), The marine flora and fauna of Hong Kong and southern China 3. Vol. 1. Introduction, taxonomy and ecology. In: Proceedings of the Fourth International Marine Biological workshop: The Marine Flora and Fauna of Hong Kong and Southern China, 11–29 April 1989. Hong Kong University Press, Hong Kong, pp. 277–302.
Nierstrasz, H.F. & Brender à Brandis, G.A. (1931) Papers from Dr. Th. Mortensen's Pacific Expedition 1914–16. LVII. Epicaridea II. Videnskabelige Meddedelser fra den Dansk Naturhistoriske Forening i København, 91, 147–226, pl. 1.
Nierstrasz, H.F. & Brender à Brandis, G.A. (1932) Alte und neue Epicaridea. Zoologischer Anzeiger, 101, 90–100.
Pearse, A. (1950) Bopyrid isopods from the coast of North Carolina. Journal of the Elisha Mitchell Scientific Society, 66 (1), 41–43.
Rafinesque, C.S. (1815) Analyse de la nature ou Tableau de l’univers et des corps organisés. Self-published, Palermo, 224 pp. [book]
https://doi.org/10.5962/bhl.title.106607
Rajkumar, M., Manokaran, S., Sun, J. & Trilles, J.P. (2011) A review of Epipenaeon ingens Nobili, 1906 (Isopoda: Bopyridae) host species and documentation of a new host, Metapenaeopsis stridulans (Alcock, 1905) (Decapoda: Penaeidae). Chinese Journal of Oceanology and Limnology, 29 (1), 136–140.
https://doi.org/10.1007/s00343-011-9923-y
Rathke, H. (1843) Beiträge zur Fauna Norwegens. Nova Acta Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum, Breslau & Bonn, 20, 1–264.
https://doi.org/10.5962/bhl.title.120119
Richardson, H. (1904) Contributions to the Natural History of the Isopoda. Proceedings of the United States National Museum, 27, 1–89.
https://doi.org/10.5479/si.00963801.27-1369.657
Saito, N. (2015) A new hemiarthrine bopyrid, Izuohshimaphryxus hoshinoi (Crustacea: Isopoda) from Izu-Ohshima Island, Sagami Sea, Pacific coast of central Japan. Crustacean Research, 44, 67–73.
https://doi.org/10.18353/crustacea.44.0_67
Stebbing, T.R. (1914) South Africa Crustacea (Part VII of South Africa Crustacea, for the marine investigations in South Africa). Annals of the South African Museum, 15, 1–55.
https://doi.org/10.5962/bhl.part.22194
Shiino, S.M. (1936) Bopyrids from Tanabe Bay, III. Memoirs of the College of Science, Kyoto Imperial University, (B), 11 (3), 157–174.
Shiino, S.M. (1937) Bopyrids from Tanabe Bay, IV. Memoirs of the College of Science, Kyoto Imperial University, Series B, 12, 479–493.
Williams, J.D. & Boyko, C.B. (2012) The global diversity of parasitic isopods associated with crustacean hosts (Isopoda: Bopyroidea and Cryptoniscoidea). PLoS One, 7 (4), e35350.
https://doi.org/10.1371/journal.pone.0035350