Parabopyrella hodgarti ( Chopra, 1923 )

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 : 54-56

Parabopyrella hodgarti ( Chopra, 1923) Figure 16

Bopyrella hodgarti Chopra, 1923: 416 , 469, 473–475, fig. 10; pl. 14, figs. 7–12 [type locality Vizagapatam, Madras Presidency (Bay of Bengal) (= Visakhapatnam, Andhra Pradesh, India); infesting Alpheus crassimanus Heller, 1865 (= A. lobidens De Haan, 1849 )]. — Shiino, 1949a: 47 (mention). — Barnard, 1955: 79, fig. 37b, c (in part; Inhambane, Mozambique; infesting A. crassimanus (= A. lobidens ). — Bourdon, 1968: 407–408 (mention). — Kensley, 1974: 261 (off Natal, South Africa; infesting Alpheus sp.). — Bourdon, 1980a: 190–191 (mention).

Parabopyrella barnardi australiensis: An, 2006: 81–82 , fig. 36 (not Parabopyrella australiensis ( Bourdon, 1980a)) .

not Bopyrella hodgarti: Barnard, 1955: 79 (in part; Mozambique; infesting Hippolyte sp.).

MATERIAL EXAMINED: Infesting Alpheus japonicus Miers, 1879 , 1 ♀ (CIEAL570601a), 1 ♂ (CIEAL570601b), Jiaozhou Bay, Qingdao , Shandong Province, 120 ° 15′E, 36 ° 15′N, 5.5 m, 18 June 1957 ; 1 ♀, 1 ♂ ( CIEAL570602 ), Jiaozhou Bay, Qingdao , Shandong Province, 120 ° 15′E, 36 ° 15′N, 5.5 m, 18 June 1957 .

Infesting Synalpheus streptodactylus Coutière, 1905 , 1 ♀ ( CIEAL 760801) East China Sea, Stn. V-3, 123 ° 00′E, 26 ° 30′N, 105 m, 27 August 1976, coll. Zhican Tang and Zhongyan Qi.

DESCRIPTION: Female (CIEAL570601a): Length 6.86 mm, maximal width 4.69 mm, head length 1.17 mm, head width 1.49 mm (fig. 16A, B). Head an inverted trapezoid, without frontal lamina; eyes absent (fig. 16A). Antennule and antenna absent. Maxilliped (fig. 16C) with short straight and stout palp, long setae terminally. Barbula (fig. 16D) with two pairs of smooth falcate lateral projections on each side and shallow indentation near center.

Pereon broadest across third pereomere (fig. 16A). Boundary between head and first pereomere only visible laterally. Coxal plates small and only on first four pereomeres of both sides, those on left side slightly larger than those on right side. Brood pouch widely open, oostegite 1 and median part of barbula visible in ventral view (fig. 16B); oostegite 5 longest. Internal ridge of oostegite 1 (fig. 16E, F) bearing six to eight small digitate projections, posterolateral point rounded posteriorly. Pereopods larger posteriorly (fig. 16G). Pleon of six pleomeres, but sutures obscure, wide lateral indentations indicating pleomeres. Five pairs of triangular flaplike biramous pleopods, surfaces smooth, uropods lacking.

DESCRIPTION: Male (CIEAL570601b): Length 1.64 mm, maximal width (across pleomere 1) 0.54 mm, head width 0.27 mm, head and pleomere length 1.25 mm. (fig. 16H, I). Head ovate, posterior edge curved, but boundary between head and first pereomere obscure (fig. 16H), eyes present mediolaterally (fig. 16H). Antennule of three articles, antenna of five articles, terminally smooth (fig. 16I). Pereomeres subequal in width, lacking midventral projections (fig. 16I). Pereopods smaller posteriorly, first three pereopods with largest dactyli, last two pereopods with smallest dactyli (fig. 16I). Pleon fused, segments indicated by strong lateral indentations, first pleomere widest with pair of large round tubercular pleopods, all other pleopods and uropods absent (fig. 16I).

HOSTS AND LOCALITIES: Infesting Alpheus japonicus Miers, 1879 , A. lobidens De Haan, 1849 , A. sp. indet., Synalpheus streptodactylus Coutière, 1905 (Alpheidae) , Andhra Pradesh, India, Mozambique, South Africa, Shandong Province, China, East China Sea, 5.5– 105 m.

REMARKS: This species was previously known from the western Pacific in the Bay of Bengal, Mozambique, and South Africa ( Chopra, 1923; Barnard, 1955; Kensley, 1974). Chopra (1923) erroneously stated that a “single specimen” was collected but des‐ cribed both the male and female; both are syntypes because Chopra failed to designate a holotype.

This is first record from China, and both hosts are first recorded as bearing parasitic isopods. The present specimens conform well to the female syntype of Chopra (1923), but the male differs from the male syntype in that (1) the present males have only the first pleomere distinct and other pleomeres indicated by lateral indentations ; but the syntype male has the first three pleomeres distinct with the others fused without any lateral indentations (the Mozambique male of Barnard (1955) is somewhat intermediate in this character with weak indications of segmentation on the first four pleomeres); (2) the present male has one pair of pleopods, but the syntype male lacks all pleopods (character state in Mozambique male unknown); (3) the present male has only the first pleomere wider than the pereon, but the syntype male has the first three pleomeres wider than the pereon (the Mozambique male is somewhat intermediate with pleomeres 2 and 3 wider than in the present specimen but not as wide as in the male syntype) .

Based on the host and the morphological differences indicated above, it is very likely that the specimens reported by Barnard (1955) from Hippolyte sp. are distinct from P. hodgarti , but, as he did not describe or illustrate them, their identity is unknown.

Figures

Fig. 16. Parabopyrella hodgarti (Chopra, 1923), reference female (CIEAL570601a) (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 (CIEAL570601b) (H, I): H. Dorsal view. I. Ventral view. Scale: 2 mm (A, B); 0.5 mm (C);1 mm (D–F); 0.35 mm (G); 0.45 mm (H, I).