Joryma engraulidis ( Barnard, 1936 )

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 : 30-31

Joryma engraulidis ( Barnard, 1936)

Agarna engraulidis Barnard, 1936: 169–170 , fig. 9 a–c.

Livoneca engraulidis . — Pillai, 1964: 2018, fig. 7e.

Joryma engraulidis . — Bowman & Tareen 1983: 21.— Aneesh, Helna & Sudha, 2016a: 1270–1277.— Aneesh, Helna, Trilles & Chandra, 2018b: 14–18, figs 9–12 .

Not Joryma engralilidis .— Kazmi, Schotte & Yousuf, 2002: 110, fig. 100 [= Joryma hilsae ].

Unconfirmed reports: Joryma engraulidis . — Veerappan & Selvamathi, 2009: 417.

Type and type locality. The neotype ovig. female (10.5 mm) held at the National Zoological Collections of Zoological Survey of India ( NZC-ZSI C- 7136/2) from Thryssa setirostris (Broussonet, 1782) Marina Beach, Chennai , Bay of Bengal designated by Aneesh et al. (2018b).

Remarks. Aneesh et al. (2017a) provided a detailed description of Indian specimen J. engraulidis . Joryma engraulidisi is distinguished from other known species within the genus by the following characteristics, body 1.4–1.6 times longer than wide, cephalon conspicuous dorsally and reaching beyond pereonite 1 expansion, pereonite 1 anterolateral expansion unilateral and not bilobed, pleonites not overlapped, pleotelson broadly rounded uropod rami unequal, mandibular palp 3-segmented.

Agarna engraulidis Barnard, 1936 was transferred to Livoneca engraulidis by Pillai (1964) without any generic diagnosis. This view has not been supported by Bowman & Tareen (1983) and this species was transferred to Joryma , while expressing reservation about its generic position.

Kazmi et al. (2002) figure of J. engralilidis from the host Sardillella spp. is a misidentification and refers to J. hilsae . The cephalon conspicuous dorsally and reaching the margin of pereonite 1 expansion, pereonite 1 anterolateral expansion bilateral and slightly bilobed, pleonites not overlapped, pleotelson broadly rounded, uropods rami equal mandibular palp 3-segmented ( Rameshkumar et al. 2011).

Color. Female, in living condition, white color ( Aneesh et al. 2018b).

Size. Ovig. females 9–14 mm; non ovig. female 8 mm ( Aneesh et al. 2018b).

Distribution. Only known from Indian waters; Devi River, Orissa Coast, India ( Barnard 1936), Malabar Coast, Arabian Sea ( Aneesh et al. 2016a) and Chennai, Bay of Bengal ( Aneesh et al. 2018b).

Hosts. Only known from the type host Thryssa setirostris (as Engraulis setirostris ) ( Barnard 1936; Aneesh et al. 2016a, 2018b).

Figures

FIGURE 9. Nerocila loveni Bovallius, 1887, female (20 mm), (ZSI/MBRC D1-544). a, dorsal view; b, lateral view; c, forns; d, uropod.

FIGURE 10. Nerocila loveni Bovallius, 1887, female (20 mm), (ZSI/MBRC D1-544). a, antennula; b, antenna; c, mandible; d, maxillula; e, maxilla; f, maxilliped; g, maxilliped article 3;

FIGURE 11. Nerocila loveni Bovallius, 1887, female (20 mm), (ZSI/MBRC D1-544). a–g, pereopod 1–7.

FIGURE 12. Nerocila loveni Bovallius, 1887, female (20 mm), (ZSI/MBRC D1-544). a–e, pleopods 1–5.