Nerocila sundaica Bleeker, 1857

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 : 61

publication ID	https://doi.org/10.11646/zootaxa.4622.1.1
publication LSID	urn:lsid:zoobank.org:pub:4537BB46-452F-4E0C-A444-4AA5E12A64E7
persistent identifier	https://treatment.plazi.org/id/E129637E-FFA6-A47F-FF47-FD6BFE02F8ED
treatment provided by	Plazi (2019-06-26 09:02:23, last updated by PlaziZenodoSync 2019-08-28 11:53:12)
scientific name	Nerocila sundaica Bleeker, 1857
status

Treatment

( Fig. 13 View FIGURE 13 a–c)

Restricted synonymy: Nerocila Sundaica — Bowman, 1978: 33–44, figs 1–7.— Bruce, 1987b: 406.— Bruce, 1988: 598.— Trilles, Ravichandran & Rameshkumar 2011: 453.— Trilles, Rameshkumar & Ravichandran, 2013: 1273–1286, fig. 2j.—Rameshkumar, Ramesh, Ravichandran & Trilles, 2014c: 940–944, fig. 1i. —Rameshkumar, Ramesh, Ravichandran, Trilles & Shobana, 2015: 789–792, figs 1, 2..— Rameshkumar, Ramesh, Ravichandran & Trilles, 2016: 968–970, fig. 3.

Type and type locality. The syntype, held at Rijksmuseum van Natuurlijke Historie, Leiden, ( RMNH n. 12) from the Indian Ocean.

Material examined. 4 ovig. females (22–26 mm), Nagappatinam, 8 January 2011 and 1 April 2011, from Ilisha melastoma , coll. G. Rameshkumar ( CAS / MBRM 670–673); 1 ovig. female (24 mm), Pazhaiyar, 28 December 2016, from Otolithes ruber , coll. S. Ravichandran ( ZSI / MBRC D1-547); 2 ovig. females (23, 25 mm) from Terapon puta Cuvier, 1829 , 3 non ovig. females (23–26 mm) from Selaroides leptolepis, Mandapam , 18 January 2016, coll. P. Vigneshwaran ( CAS / MBRM 675–677), all collected from the southeastern coast of India.

Remarks. Nerocila sundaica has a cephalon anterior margin produced narrowly rounded or with an indistinct medial point. The posterolateral corners of pereonite 7 are usually produced backward into a pointed process, reaching as far as the anterior margin of pleonite 5. The exopod of the uropod is tilted inward so that its full width is not seen in dorsal view. Endopod reaching or extending scarcely beyond the posterior margin of pleotelson. Bowman (1978), redescribed in great detail of this species, this is one of the most common Indo–Pacific species of Nerocila , but has only been recorded from the northem Indian and Pacific oceans.

Colour. Ivory white to pale brown in alcohol.

Size. Ovig. females 20–26 mm; non ovig. females 20–26 mm.

Distribution. This isopod has a wide distribution that includes the South China Sea and the Java Sea in the Pacific Ocean ( Bowman 1978), and the northern Indian Ocean including the Bay of Bengal ( Trilles et al. 2013), Arabian Sea (Chidambaram & Menon 1945), and the Persian Gulf ( Bowman 1978).

Host. In most instances the hosts are unknown, but Chidambaram & Menon (1945) reported from 6 different species of fishes Engraulis mystax (as Thryssa mystax ), Otolithus ruber , Serranus sp., Pellona indica , Therapon jarbua and Sardinella fimbriata (Valenciennes, 1847) on the west coast of India. Most recently Trilles et al. (2013) recorded from a different host of fishes Carangoides Malabaricus , Ilisha melastoma , Otolithes ruber , Selaroides leptolepis , Terapon puta and Opisthopterus tardoore (Cuvier, 1829) and Rameshkumar et al. (2016) recorted from Pomadasys maculatus .

References

Bleeker, P. (1857) Recherches sur les Crustaces de l'Inde archipelagique. II. Sur les Isopodes Cymothoadiens de l'archipel Indien. Natuurkundige Vereeniging in Nederlandsch-Indie, Batavia, Verhandelingen, 2, 20 - 40.

Bowman, T. E. (1978) Nomenclatural problems in the cymothoid isopod genera Ceratothoa, Codonophilus, Glossobius and Meinertia - their solution by applying the law of priority. Crustaceana, 34, 217 - 219. https: // doi. org / 10.1163 / 156854078 X 00754

Bruce, N. L. (1987 b) Australian species of Nerocila Leach, 1818, and Creniola n. gen. (Isopoda, Cymothoidae), crustacean parasites of marine fishes. Records of the Australian Museum, 39, 355 - 412. https: // doi. org / 10.3853 / j. 0067 - 1975.39.1987.174

Bruce, N. L. & Harrison-Nelson, E. B. (1988) New records of fish parasitic marine isopod crustaceans (Cymothoidae, subfamily Anilocrinae) from the Indo-West pacific. Proceedings of the Biological Society of Washington, 101 (3), 585 - 602.

Rameshkumar, G., Ravichandran, S., Sivasubramanian, K. & Trilles, J. - P. (2013 d) New occurrence of parasitic isopods from Indian fishes. Journal of Parasitic Diseases, 37, 42 - 46. https: // doi. org / 10.1007 / s 12639 - 012 - 0128 - x

Rameshkumar, G., Ramesh, M., Ravichandran, S. & Trilles, J. - P. (2016) Two Nerocila species parasitizing Pomadasys maculatus from Nagapattinam, Southeast coast of India. Journal of Parasitic Diseases, 40 (3), 968 - 970. https: // doi. org / 10.1007 / s 12639 - 014 - 0616 - 2

Ravichandran, S., Rameshkumar, G. & Trilles, J. - P. (2011) New records of two parasitic cymothoids from Indian fishes. Journal of Parasitic Diseases, 35, 232 - 234. https: // doi. org / 10.1007 / s 12639 - 011 - 0046 - 3

Trilles, J. - P., Rameshkumar, G. & Ravichandran, S. (2013) Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes. Parasitology Research, 112, 1273 - 1286. https: // doi. org / 10.1007 / s 00436 - 012 - 3263 - 5

Figures

FIGURE 13. a–c, Nerocila sundaica Bleeker, 1857, female (24 mm), (ZSI/MBRC D1-547); d–f, Nerocila trichiura (Miers, 1877), female (30 mm), (ZSI/MBRC D1-548); g–i, Norileca indica (H. Milne Edwards, 1840), female (26 mm), (ZSI/MBRC D1-549); j–l, Norileca triangulata (Richardson, 1910), female (16 mm), (ZSI/MBRC D1-550); m–o, Ryukyua circularis (Pillai, 1954), female (13 mm), (CAS/MBRM C-227); p–r, Ryukyua globosa Williams & Bunkley-Williams, 1994, female (14 mm), (ZSI/MBRC D1-552).