Parapenaeon expansa Bourdon, 1979a

An, Jianmei, Markham, John C. & Li, Xinzheng, 2015, A review of the genus Parapenaeon Richardson, 1904 (Crustacea: Isopoda: Bopyridae: Orbioninae), with description of three new species from China, Journal of Natural History 49 (41), pp. 2527-2557 : 2538-2541

Parapenaeon expansa Bourdon, 1979a

( Figures 4, 5 )

Parapenaeon expansus Bourdon, 1979a: 494 , 495–498; figs. 15–17, 18b, c {Near Madagascar; infesting Penaeus teraoi Kubo [= Melicertus teraoi (Kubo) ]}. Nearhos and Lester, 1984: 257, 258 {Moreton Bay, Queensland, Australia; infesting P. plebejus Hess [= Melicertus plebejus (Hess) ]. Karumbu, Gulf of Carpentaria, Australia; infesting Penaeus sp.}. Owens and Glazebrook, 1985a: 105, 108–112; tabs. 2–4 {Northern Australia; infesting Penaeus indicus H. Milne Edwards [ Fenneropenaeus indicus (H. Milne Edwards) ], Penaeus merguiensis de Man [= Fenneropenaeus merguiensis (de Man) ] and Penaeus longistylus Kubo [= Melicertus longistylus (Kubo) ]}. Owens and Glazebrook, 1985b: 134–135 (Northern Australia; infesting P. merguiensis , P. indicus and P. longistylus ). Owens, 1986: iv, 15, 84, 85, 91, 92, 95–100; tabs. 2.4.1, 8.2, 8.4 (b) (Gulf of Carpentaria and northeast coast of Queensland; infesting P. merguiensis , P. indicus and P. longistylus ). Owens, 1987: 119. Anderson, 1990: 290. - Owens, 1990: 35–37, 39; tab. 1 (Summary of occurrence in Australia). Owens and Rothlisberg, 1991: 35. Owens, 1993: 381, 384, 386 {Northeast coast of Queensland, Australia; infesting P. latisulcatus Kishinouye [= Melicertus latisulcatus (Kishinouye) ]}. Humphrey, 1995: tab. 48. Owens and Rothlisberg, 1995: 159 (Gulf of Carpentaria; study of cryptoniscus larvae). Department of Agriculture, 1998: 44; tab. 8. Trilles, 1999: 338. Kensley, 2001: 225. An, 2006: 82, 87–88; fig. 77 (account of material reported herein).

Parapenaeon monolioncus An, 2006: 152–153 , fig. 78 (invalid name).

Parapenaeon japonica . Kazmi and Tirmizi, 1994: 171–172, fig. 1 [Karachi, Pakistan; infesting P. merguiensis de Man ; non P. japonica ( Thielemann 1910) ]

Parapenaeon expansa . Markham, 1994: 225, 226, 242, 244–245; fig. 14 [ New Caledonia; infesting Metapenaeonopsis gaillardia Crosnier. Strait of Makassar, Indonesia; infesting Metapenaeonopsis sinica Liu and Zhong. Seychelles; infesting Metapenaeonopsis faouzii Ramadan. Madagascar; infesting Metapenaeonopsis mogiensis consobrina (Nobili). Redescription]. Bruce, 2007: 278.

Material examined

Infesting Fenneropenaeus penicillatus ( Alcock, 1905) . CIEPE550329 , ♀, ♂, Xiamen , Fujian Province, 24°30 ′ N, 118°05 ′ E, 29 March 1955 . CIEPE560227 , ♀, ♂, Zhelang , Guangdong Province, 22°40 ′ N, 115°35 ′ E, 27 February 1956 . CIEPE560326 , ♀, ♂, Guanghai , Guangdong Province, 21°56 ′ N, 112°45 ′ E, 26 March 1956, coll. Ruiyu Liu.

Infesting Penaeus japonicus ( Spence Bate, 1888) . CIEPE601101 , ♀, ♂, South China Sea, Stn. 6011. 22°45 ′ N, 117°00 ′ E, 38 m, 24 April 1960, coll. Mu Chen.

Remarks

Parapenaeon expansa has been found across the Indian Ocean and on the Pacific side of Australia, but this is the first published record of its occurrence in China. It has previously been found infesting nine species of hosts; those reported here are both new records for any bopyrid parasite.

The specimens from Pakistan recorded by Kazmi and Tirmizi (1994) as P. japonica we believe were misidentified specimens of P. expansa and are cited in our synonymies accordingly above. The present specimens ( Figures 4, 5 ) conform well to the descriptions of Bourdon (1979a) and Kazmi and Tirmizi (1994). Characters of some females that differ from previous records are the inner projection of the barbula ( Figure 4E) being much smaller than the outer one, and the maxilliped palp being slightly segmented. In one male specimen ( Figure 5H, I ) the margin of the pleon is dentate and obscurely segmented in ventral view. An (2006) examined these specimens and recorded two Parapenaeon species ( P. expansus and P. monolioncus sp. nov.) in her doctoral dissertation. Now we consider all these materials to represent P. expansa , with the name P. monolioncus being invalid because of its presentation in an unpublished dissertation (not a published work in the sense of the ICZN); it is introduced here in synonymy.

Figures

Figure 5. Parapenaeon expansa Bourdon, 1979a, reference female (CIEPE601101) (A–G). (A) Dorsal view; (B) ventral view; (C) right maxilliped, external view; (D) right side of the barbula; (E) right oostegite 1, external view; (F) right oostegite 1, internal view; (G) right pereopod 1. Reference male (CIEPE601101) (H–L). (H) Dorsal view; (I) ventral view; (J) right antennae; (K) right pereopod 1; (L) right pereopod 7. Scale bars: A, B, 2 mm; C, E, F, 1.12 mm; D, 0.46 mm; G, 0.32 mm; H, I, 0.56 mm; J, 0.18 mm; K, L, 0.22 mm.