Joryma sawayah Bowman & Tareen, 1983

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 : 32

publication ID

https://doi.org/ 10.11646/zootaxa.4622.1.1

publication LSID

urn:lsid:zoobank.org:pub:4537BB46-452F-4E0C-A444-4AA5E12A64E7

DOI

https://doi.org/10.5281/zenodo.8397278

persistent identifier

https://treatment.plazi.org/id/E129637E-FF85-A45C-FF47-FDA1FDA6F806

treatment provided by

Plazi

scientific name

Joryma sawayah Bowman & Tareen, 1983
status

 

Joryma sawayah Bowman & Tareen, 1983 View in CoL View at ENA

( Fig. 2 View FIGURE 2 m–o)

Joryma sawayah Bowman & Tareen, 1983: 21–25 View in CoL , figs 14 a, 16–18 View FIGURE 16 View FIGURE 17 View FIGURE 18 .— Kazmi, Schotte & Yousuf, 2002: 109, fig. 99.— Sethi, 2012: 153–155, fig. 4.—Rameshkumar, Ravichandran, Sivasubramanian & Trilles, 2013a: 42, fig. 1d.—Rameshkumar, Ramesh, Ravichandran & Trilles, 2014c: 940–944, fig. 1d.— Aneesh, Helna & Sudha, 2016: 1270–1277, fig. 1g, h.— Aneesh, Helna, Trilles & Chandra, 2018b: 22–29, figs 18–22 View FIGURE 18 View FIGURE 19 View FIGURE 20 View FIGURE 21 View FIGURE 22 .

Type and type locality. The holotype, held at National Museum of Natural History, Smithsonian Institution ( USNM 189264), from South of Faylaka, Kuwait (Persian Gulf).

Material examined. 13 ovig. females (15–19 mm), Muttam, the southweast coast of India, 29 July 2015, from Stolephorus commersonnii Lacepède, 1803 , coll. G. Rameshkumar & S. Ravichandran ( CAS / MBRM C- 108– C-121); 1 ovig. female (14 mm), Nagapattinam , southeast coast of India, 22 July 2016, from Ilisha melastoma (Bloch & Schneider, 1801) , coll. S. Ravichandran ( ZSI / MBRC D1-536 ) ; 4 non ovig. females (12–16 mm) Vedaranyam , southeast coast of India, 18 September 2016, from Ilisha melastoma , coll. D. Karthick Rajan ( CAS / MBRM C-122 C-125 ) .

Remark. Joryma sawayah is readily identifiable from the cephalon exposed dorsally and not reaching the margin of pereonite 1 expansion; pereonite 1 anterolateral expansion bilateral and distinctly bilobed; coxae of pereonites 2 and 3 inflated, much larger than remaining coxae; area medial to coxa may be inflated also, resembling dorsolateral bosses; pleonites 1, 2 and 3 overlapped laterally; pleotelson triangular, uropods rami unequal, mandibular palp not segmented; pereopods rather short, bases not expanded; uropods reaching the middle of the lateral margin of pleotelson.

The type species ( J. sawayah ) for the genus was first described by Bowman & Tareen (1983) and was subsequently detailley redescribed by Aneesh et al. (2018b). The Indian specimens are similar with holotype specimen in having a body slightly asymmetrical, twisted to one side, posterior part of cephalon covered by pereonite 1, Pereonite 1 produced into lobe along 1 or both lateral margins of the cephalon. Differences include the Indian specimens having posterolateral margins of pereonites 2–7 inflated particularly at the hunched side of pereon (compared to the straight and smooth margins) and the subtriangular pleotelson posterior margin (compared to the subquadrate pleotelson posterior margin). J. sawayah can be distinguished from J. hilsae by being smaller than the latter, with its body twisted to the side, slightly concave posterior margin of the pleotelson, other characters are discussed under Remarks for J. hilsae to which this species is distinguished.

Colour. Body pale tan in colour.

Size. Ovig. females, 15–19 mm; non ovig. females, 12–16 mm.

Distribution. Recorded from the Persian Gulf, Kuwait ( Bowman & Tareen 1983) and most recently reported from the northern Arabian Sea ( Kazmi et al. 2002). Recent records are from the southeast coast ( Sethi et al. 2012; Rameshkumar et al. 2013, 2014) and southwest coast ( Aneesh et al. 2016) of India.

Host. Mostly known from the family Pristigasteridae : Ilisha melastoma ( Bowman & Tareen 1983; Rameshkumar et al. 2013, 2014; Aneesh et al. 2016), Pellona ditchela Valenciennes, 1847 ( Sethi et al. 2012). As well as Joryma sawayah reported from the family Teraponidae ( Therapon puta ) ( Bowman & Tareen 1983) and Clupeidae ( Sardinella spp.) ( Kazmi et al. 2002).

USNM

Smithsonian Institution, National Museum of Natural History

CAS

California Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Cymothoidae

Genus

Joryma

Loc

Joryma sawayah Bowman & Tareen, 1983

Ravichandran, S., Vigneshwaran, P. & Rameshkumar, G. 2019
2019
Loc

Joryma sawayah

Bowman & Tareen 1983: 21
1983
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