Bopyroides shiinoi Rybakov and Andeev, 1991

An, Jianmei, Boyko, Christopher B. & Li, Xinzheng, 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), pp. 1-85 : 43-45

Bopyroides shiinoi Rybakov and Andeev, 1991 Figure 12

Bopyroides hippolytes: Shiino, 1937a: 293– 296 , fig. 1 [ Japan, infesting Spirontocaris alcimede de Man, 1906 (= Heptacarpus geniculatus (Stimpson, 1860)) , S. mororani Rathbun, 1902 (= S. ochotensis (Brandt, 1851) , S. pandaloides Stimpson (= Heptacarpus pandaloides (Stimpson, 1860)) ] (not Bopyroides hipplolytes Kröyer, 1838 ).

Bopyroides shiinoi Rybakov and Andeev, 1991: 169–171 [Peter the Great Bay, Sea of Japan, infesting Heptacarpus camtschaticus (Stimpson, 1860) , H. geniculata longirostris (Kobjakova) (= H. longirostris (Kobyakova, 1936)) , and H. grebnitzkii Rathbun, 1902 ]; Boyko, 2004: 692–693 (mention, no new records); An, 2006: 79–80, fig. 35.

MATERIAL EXAMINED: Infesting Hippolyte sp. ( Hippolytidae ), 1 ♀ ( CIEHI 560901), 1 ♂ ( CIEHI 560902), Sea Island, Dalian City, Jiangsu Province, 123 ° 15′E, 39 ° 00′N, 27 September 1956.

DESCRIPTION: Female (CIEHI560901): Length 4.86 mm, maximal width 3.60 mm, head length 0.84 mm, head width 1.28 mm, sinistrally distorted 36 ° (fig. 12A, B).

Head ovate, anterior edge bilobate, frontal lamina present, eyes absent (fig. 12A). Maxilliped (fig. 12C) with setose, articulated palp, inner edge fringes with setae. Barbula (fig. 12D) with two pairs of sharp, elongate falcate lateral projections on each side.

Pereon broadest across third pereomere (fig. 12A). Narrow rudimentary coxal plates on first four pereomeres of both sides. Lateral margin of pereomeres 5–7 indented (fig. 12A). Brood pouch completely open (fig. 12B). Oo‐ stegite 1 (fig. 12E, F) with two equally long articles, internal ridge almost smooth, posterolateral point blunt and directed laterally; fifth oostegite longest. Pereopods with sub‐ equal size and structure (fig. 12G), blunt dactyli, bases with carinae. Pleon of five pleomeres, fused medially. Pleopods and uropods lacking.

DESCRIPTION: Male (CIEHI560902): Length 1.87 mm, maximal width (across pereon 5) 0.58 mm, head width 0.34 mm, pleonal length 0.51 mm. All pereon segments distinct, pleomeres fused (fig. 12H, I). Head a flattened ellipse (fig. 12H), eyes in posterolateral corners (fig. 12H). Antennule of three articles, antenna of five articles, terminally setose, extending beyond margins of head (fig. 12I). Pereomeres subequal in width, lacking midventral projections (fig. 12I). Pereopods with subequal size and structure (fig. 12I). Pleon completely fused, pleopods and uropods lacking (fig. 12I).

HOSTS AND LOCALITIES: Infesting Heptacarpus geniculatus (Stimpson, 1860) , Heptacarpus pandaloides (Stimpson, 1860) , Hippolyte sp., Spirontocaris ochotensis (Brandt, 1851) (Hippolytidae) , Japan and Jiangsu Province, China.

REMARKS: Shiino (1937a) recorded Bopy ‐ roides hippolytes infesting three Spirontocaris spp. from Japan, but this material was considered as belonging to B. shiinoi by Rybakov and Avdeev (1991), which was described from a more northerly locality in the Sea of Japan and from different hippolytid hosts. Rybakov and Avdeev (1991) noted that the most obvious difference between B. hippolytes and B. shiinoi is in the fusion of the terminal pleomeres. The present female does not have tubercular pleopods but does have fusion of the last two pleomeres, suggesting that it is conspecific with B. shiinoi . The host of the present specimens must be new, as no species of Hippolyte was previously known as a host for B. shiinoi , but this host specimen is not identifiable beyond the genus level.

KEY TO THE THREE SPECIES OF

Figures

Fig. 12. Bopyroides shiinoi Rybakov and Andeev, 1991, reference female (CIEHI560901) (A–G): A. Dorsal view. B. Ventral view. C. Left maxilliped, external view. D. Left side of barbula. E. Left oostegite 1, external view. F. Left oostegite 1, internal view. G. Left pereopod 1. Reference male (CIEHI560902) (H, I): H. Dorsal view. I. Ventral view. Scale: 1 mm (A, B); 0.25 mm (C, D, G); 0.5 mm (E, F, H, I); 0.25 mm (G).