Joryma malabaricus Aneesh, Helna & Trilles, 2018

Ravichandran, S., Vigneshwaran, P. & Rameshkumar, G., 2019, A taxonomic review of the fish parasitic isopod family Cymothoidae Leach, 1818 (Crustacea: Isopoda: Cymothooidea) of India, Zootaxa 4622 (1), pp. 1-99 : 31-32

Joryma malabaricus Aneesh, Helna & Trilles, 2018

Joryma malabaricus Aneesh, Helna, Trilles & Chandra, 2018b: 5-14 , figs 1–8 .

Joryma brachysoma .— Rijin, Sudha, Vineesh & Anilkumar, 2019: 241–249, fig. 1b–d.

Type and type locality. The holotype ( NZC-ZSI C- 7138/2) and paratypes ( NZC-ZSI C- 7139/2- C- 7142/2) were collected from Malabar Coast, Arabian Sea, India (Lat. 11° 51′ N, Long. 75° 22′ E) from the host Escualosa thoracata (Valenciennes, 1847) and are deposited at the National Zoological Collections of Zoological Survey of India .

Reamraks. Joryma malabaricus can easily distinguished from other known species of Joryma by several morphological characteristics: the cephalon is conspicuous dorsally and extending beyond the pereonite 1 expansion; pereonite 1 anterolateral expansion unilateral, not bilobed; pleonites 1 and 2 laterally overlapped; pleotelson triangular; uropod rami unequal, exopod slightly longer than endopod; mandibular palp not segmented in female (in male incomplete three segment), maxilliped palp with four recurved spines. Hunching of the female body is either toward left or right according to their occupation in the branchial cavity; if the parasite is located in the right branchial cavity; its body bends toward the left and vice versa ( Aneesh et al. 2018b).

Rijin et al’s. (2019) figure of Joryma brachysoma ( Pillai 1964) from the host Escualosa thoracata is a misidentification and refers to Joryma malabaricus based on the morphology and host septicity.

Size. Females, 9–13 mm; males, 4.5– 7 mm; transitional stages, 8–10 mm; mancas, 2–2.2 mm ( Aneesh et al. 2018b).

Color. Ovig. female body pale tan with yellow/golden yellow/orange coloration in the thoracic region (depending on the color of the ovary) in the live state; male and transitional stage body pale tan; manca clear with scattered chromatophores ( Aneesh et al. 2018b).

Distribution. Reported only known from the type locality, Malabar Coast of the Arabian Sea, India ( Aneesh et al. 2018b).

Host. Only known from the type host Escualosa thoracata (Clupeidae) ( Aneesh et al. 2018b).

Figures

FIGURE 1. a–c, Anilocra dimidiata Bleeker, 1857, female (24 mm), (ZSI/MBRC D1-529); d–f, Catoessa boscii (Bleeker, 1857), female (17 mm), (ZSI/MBRC D1-530); g–i, Ceratothoa angulata (Richardson, 1910), female (29 mm), (ZSI/MBRC D1-533); j–l, Cymothoa bychowskyi Avdeev, 1979, female (27 mm), (CAS/MBRM C-87); m–o, Cymothoa eremita (Brünnich, 1783), female (29 mm), (ZSI/MBRC D1-532); p–r, Cymothoa frontalis Milne Edwards, 1840, female (25 mm), (CAS/MBRM C-89).

FIGURE 2. a–c, Cymothoa indica Schiöedte & Meinert, 1884, female (25 mm), (CAS/MBRM C-97); d–f, Cymothoa parupenei Avdeev, 1979, female (25 mm), (ZSI/MBRC D1-533); g–i, Glossobius impressus (Say, 1818) female (26.7 mm) (ZSI/MBRC D1-554); j–l, Joryma hilsae Rameshkumar et al. 2011, female (20 mm), (ZSI/MBRC D1-535); m–o, Joryma sawayah Bowman & Tareen, 1983, female (14 mm), (ZSI/MBRC D1-536); p–r, Lobothorax typus Bleeker, 1857, female (23 mm), (ZSI/MBRC D1-537).

FIGURE 3. a–c, Mothocya collettei Bruce, 1986, female (25 mm), (CAS/MBRM C-149); d–f, Mothocya melanosticta (Schiöedte & Meinert, 1884), female (24 mm), (ZSI/MBRC D1-538); g–i, Mothocya plagulophora (Haller, 1880), female (28 mm), (ZSI/MBRC D1-539); j–l, Mothocya renardi (Bleeker, 1857), female (30 mm), (ZSI/MBRC D1-540); m–o, Nerocila arres Bowman & Tareen, 1983, female (28 mm), (CAS/MBRM 475–476); p–r, Nerocila depressa Milne Edwards, 1840, female (30 mm), (ZSI/MBRC D1-541).

FIGURE 4. Mothocya plagulophora (Haller, 1880), female (28 mm), (ZSI/MBRC D1-539). a, dorsal view; b, lateral view; c, mouthpart with antennula and antenna; d, antennula; e, antenna; f, mandible; g, maxillula; h, maxilliped; i, maxilla.

FIGURE 5. Mothocya plagulophora (Haller, 1880), a, male (13 mm) (CAS/MBRM C-167) dorsal view; b–m, female (28 mm), (ZSI/MBRC D1-539); b–f, pereopod 1, 2, 4, 6 & 7; g–k, pleopods 1–5; l, uropod; m, brood pouch.

FIGURE 6. Nerocila depressa Milne Edwards, 1840, female (30 mm), (ZSI/MBRC D1-541). a, dorsal view; b, lateral view; c, forns; d, antennula; e, antenna; f, mandible; g, maxillula; h, maxilla; i, maxilliped.

FIGURE 7. Nerocila depressa Milne Edwards, 1840, female (30 mm), (ZSI/MBRC D1-541). a–e, pereopods 1–3, 5 & 7; f–j, pleopods 1–5; k, uropod.

FIGURE 8. a–c, Nerocila exocoeti Pillai, 1954, female (25 mm), (ZSI/MBRC D1-542); d–f, Nerocila longispina Miers, 1880, female (22 mm), (ZSI/MBRC D1-543); g–i, Nerocila loveni Bovallius, 1887, female (20 mm), (ZSI/MBRC D1-544); j–l, Nerocila phaiopleura Bleeker, 1857, female (26 mm), (ZSI/MBRC D1-545); m–o, Nerocila poruvae Rameshkumar et al. 2011, female (24 mm), (ZSI/MBRC D1-546); p–r, Nerocila serra Schiöedte & Meinert, 1881, female (28 mm), (CAS/MBRM–661).