Redescription of Bathygyge grandis Hansen, 1897 (Crustacea, Isopoda, Bopyridae) from Southern California with erection of a new subfamily, Bathygyginae, for it

Bulletin of the Southern California Academy of Sciences Volume 115 | Issue 1 Article 4 4-26-2016 Redescription of Bathygyge grandis Hansen, 1897 (Crustacea, Isopoda, Bopyridae) from Southern California with erection of a new subfamily, Bathygyginae, for it John C. Markham Arch Cape Marine Laboratory, Follow this and additional works at: https://scholar.oxy.edu/scas Part of the Biodiversity Commons, and the Marine Biology Commons Recommended Citation Markham, John C. (2016) "Redescription of Bathygyge grandis Hansen, 1897 (Crustacea, Isopoda, Bopyridae) from Southern California with erection of a new subfamily, Bathygyginae, for it," Bulletin of the Southern California Academy of Sciences: Vol. 115: Iss. 1. Available at: https://scholar.oxy.edu/scas/vol115/iss1/4 This Article is brought to you for free and open access by OxyScholar. It has been accepted for inclusion in Bulletin of the Southern California Academy of Sciences by an authorized editor of OxyScholar. For more information, please contact . Markham: Redescription of Bathygyge grandis Hansen (Isopoda, Bopyridae) Bull. Southern California Acad. Sci. 115(1), 2016, pp. 72–80 E Southern California Academy of Sciences, 2016 Redescription of Bathygyge grandis Hansen, 1897 (Crustacea, Isopoda, Bopyridae) from Southern California with Erection of a New Subfamily, Bathygyginae John C. Markham Arch Cape Marine Laboratory, Arch Cape, Oregon 97102-0133, Hansen (1897), dealing with only fragmentary material, erected the genus Bathygyge with B. grandis as its type-species as one of the earliest bopyrid species known from the eastern Pacific Ocean. Bathygyge grandis was first recorded as a parasite of the deep-water crangonid shrimp Glyphocrangon spinulosa Faxon from off the coast of Acapulco, Mexico. It has since been reported from several different localities worldwide as a parasite of other species of Glyphocrangon, but it has never been properly described. Material that recently became available from near the type-locality has made it possible to correct that situation. Order Isopoda Latreille, 1817 Suborder Cymothoida Wägele, 1989 Family Bopyridae Rafinesque-Schmaltz, 1815 Subfamily Bathygyginae, subf. n. Genus Bathygyge Hansen, 1897 Type-species, by monotypy, Bathygyge grandis Hansen, 1897 Bathygyge grandis Hansen, 1897 Figs. 1–2 Bopyrus – Faxon, 1895: 140 [Type-material later described]. Bathygyge grandis Hansen, 1897: 122-124; pl. V, figs. 2-2c [Pacific Ocean, off Acapulco, Mexico, 21u159N, 106u239W, 676 fm {5 1236m}; infesting Glyphocrangon spinulosa Faxon, 1893].—Richardson, 1899a: 869.—Richardson, 1899b: 338.–Bonnier, 1900: 48, 221, 291292, 381; fig. 53.—Richard, 1900: 71.—Townsend, 1901: 527.–Richardson, 1905: 537-539; fig. 581.—Stebbing, 1908: 57-59; pl. XXXIII [Off Cape Point, South Africa, 800-900 fm {5 1463-1646m}; infesting Glyphocrangon sculpta (S. I. Smith, 1882)].— Stebbing, 1910: 436.—Nierstrasz and Brender à Brandis, 1923: 86.—Barnard, 1940: 494, 721.—Danforth, 1963: 33, 37, 91, 92; pl. 5, figs. 1, 2.–Şadoğlu, 1969: 197.—Schultz, 1969: 312; fig. 496.—Danforth, 1970: 9, 43, 57-58, 149; fig. 5D, E.—Holthuis, 1971: 285.–Wenner, 1978: 1058-1061 [On continental slope of Middle Atlantic Bight; infesting G. sculpta and G. longirostris (S. I. Smith, 1882)].—Bourdon, 1979: 510.–Markham, 1979: 771-772.— Markham, 1985: 19, 131 [Atlantic Ocean, off coast of Virginia, USA: infesting G. longirostris].—Markham, 1986: 155, 156; fig. 4B.—Kaufmann et al., 1989: 1882; tab. 4 [Magellan Rise, NE Pacific, 07u059N, 176u559W - 176u509W, 3100m; infesting unspecified host, probably G. vicaria Faxon].–Salazar-Vallejo and Leija-Tristán, 1989: 429.—Leija-Tristán and Salazar-Vallejo, 1991: 1.—Markham, 1992: 3; tab. 1.—Espinosa-Pérez and Hendrickx, 2001: 50.—Román-Contreras and Soto, 2002: 279.—An, 2006: Abstract [on unnumbered p.], 73-74, 114, 117, 123, 131; fig. 28 [East China Sea, 26u109N, 126u009E; infesting Glyphocrangon sp.].— An et al., 2007: 1002, 1003; fig. 1 [Same material as An, 2006].—Yu and An, 2008: 691.–Stebbins, 2012a: 2.—Stebbins, 2012b: 2, 6, 16; 4 unnumbered figs. 72 Published by OxyScholar, 2016 1 Bulletin of the Southern California Academy of Sciences, Vol. 115 [2016], Iss. 1, Art. 4 REDESCRIPTION OF BATHYGYGE GRANDIS HANSEN (ISOPODA, BOPYRIDAE) 73 ?Gigantione bouvieri.—Bourdon, 1967: 857 [Canary Islands; infesting Glyphocrangon sp., hyperparasitized by Cabirops serratus Bourdon, 1967. Probably not Gigantione bouvieri Bonnier, 1900]. ?Bathygyge sp.—Bourdon, 1967: 857 [Same material tentatively called Gigantione bouvieri above].—Bourdon, 1979: 510 [Azores, 1590–1665m; infesting Glyphocrangon longirostris].—Lemos de Castro, 1970: 2..—Holthuis, 1971: 339.—Restivo, 1971: 71; tab. 1.—Restivo, 1975: 153; tab. 3.—Bourdon et al., 1981: 498.—Rybakov, 1990: 415.—RománContreras, 2008: 91. ?”bopyrid parasites.”—Holthuis, 1971: 339 [Off Atlantic coast of Nigeria, 04u15’N, 04u279E −04u129N, 04u289E, 1280-1320m; infesting Glyphocrangon longirostris]. Munidion sp.—Wicksten, 1979: 222 [San Clemente Basin, California, infesting Glyphocrangon vicaria Faxon, 1896: material examined herein, described below].—Wicksten, 2009: 168. ?”branchial bopyrid.”—Chace, 1984: 11 [West of Halmahera, Indonesia, 00u16930″N, 127u30900″E, 497m; infesting Glyphocrangon faxoni de Man, 1918]. Bathygege [sic] grandis.– Campos and Campos, 1989: 33; tab. 2. ?”Bopyrid isopod”—Moore et al., 2003: 368 [Bear Seamount, northwestern Atlantic, 39u559N, 67u309W, 1100 m; infesting “Glyphocrangon” {probably 5 G. sculpta}]. ?”bopyrid isopod.”—Ahyong, 2006: 68 [Tasman Sea, 32u049S, 159u539E, 1920-1934m; infesting Glyphocrangon dimorpha Komai, 2004].—Han and Li, 2007: 550 [East China Sea, 09u299N, 123u419E, 2000-2150m; infesting Glyphocrangon megalophthalma de Man, 1918] Material Examined Infesting Glyphocrangon vicaria Faxon, 1896. R/V Agassiz Station M-7 Sta. 3, San Clemente Basin, eastern Pacific off California, USA, 32u289N, 118u089W, 1792m, 16 September 1971, 40-foot otter trawl. 2♀, 2♂, SIO (Scripps Institute of Oceanography) C3100. Redescription of Female Length 12.7 mm, maximal width 9.3 mm, head length 1.3mm, head width 2.8 mm, pleonal length 3.9 mm. Distortion 115u sinistrally. Body outline broadly ovate, widest across pereomere 5. All body regions distinct, pereomeres distinct but pleomeres medially fused; pleon strongly torsioned (Fig 1A, B). Head deeply embedded in pereon, its anterior margin overreached by second oostegites. No eyes. Antennae (Fig. 1C) not extending beyond margins of head, first of 3 articles, second of 6 articles, setation obscure. Barbula (Fig. 1D) with pair of unornamented slender falcate projections on each end, slightly sinuous margin medially. Maxilliped (Fig. 1E) of irregularly pentagonal anterior article bearing subterminal articulating triangular palp (Fig. 1F) densely setose along medial edge; and smaller subtriangular posterior article produced into long slender plectron (Fig. 1G) directed anteromedially. Per (...truncated)