Solenoceridae Wood-Mason in Wood-Mason & Alcock, 1891

Purushothaman, P., Chakraborty, Rekha Devi, Maheswarudu, G. & Kuberan, G., 2017, New records of Solenocera barunajaya Crosnier, 1994 and Solenocera rathbuni Ramadan, 1938 (Crustacea: Decapoda: Penaeoidea) from the southwest coast of India, Zootaxa 4341 (2) : -

Family Solenoceridae Wood-Mason in Wood-Mason & Alcock, 1891 Genus Solenocera Lucas, 1849

Solenocera barunajaya Crosnier, 1994 ( Fig. 1 , Tab. 1)

Solenocera barunajaya Crosnier, 1994: 355 , figs 1a–c, 2 a, 3a–c.— Dall 1999, fig. 13.

Material examined. CMFRI (ID: ED.1.1.1.6), 20 females (CL 11–14 mm), 6 males (10–14 mm), Kerala, Kollam, Sakthikulangara, south eastern Arabian Sea , 200–350 m, Sep 2016 .

Diagnosis. Carapace glabrous with few bristles on base of adrostral carina. Rostrum straight with upward anterior edge, slightly exceeding end of cornea; dorsally with 6 teeth, including epigastric; ventrally convex, with fine setae. Postrostral carina continuing to origin of cervical sulcus. Orbital angle present and smaller spines at the antennal, hepatic, and branchiostegal regions; larger spine at supraorbital region. Cervical sulcus deep, sinuous, almost reaching dorsum, ending with hepatic spine, well-defined hepatic sulcus extending posteriorly. Orbito-antennal sulcus faint, shallow. Outer antennular flagellum longer than inner flagellum; with 71–75 segments; tapering. Abdominal segments smooth, shiny, without carination on first segment, 2nd faintly carinated. Telson longer than uropodal endopod, with a pair of fixed spines, terminating sharply. Thelycum between 4th and 5th pereopod with 2 pairs of tubercles, middle 2 large, flanked by smaller ones; at 4th pereopod, a trapezoidal plate; a triangular depression (between 5th pereopod) with smooth surface. Petasma with ventromedial, dorsolateral and ventral lobules pectinated distally with minute bristles. Dorsomedial lobules not joined distally, with comb-like, tightly arranged, strong bristles and dorsolateral lobule; 47–53 bristles.

Remarks. Based on Crosnier (1994), the Indian specimens of S. barunajaya are similar to the holotype with slight variation in antennal flagella. In the present study, antennal flagella segmented with 67–75 articles, the length of the lower flagella found always lesser than to upper flagella. However, upper flagellar length was slightly longer (1.07 times to carapace length) in comparison with the holotype. Dorsal carina of the 2nd abdominal segment appeared faint. These specimens showed high similarity to S. faxoni with few differences in the rostral spines (5+1), thelycum boss (2 pairs) and antennal flagella ( Dall 1999).

Figures

FIGURE 1. Solenocera barunajaya Crosnier, 1994, female (CL 13 mm) (a). Species key characters: rostral appearance (b); branchiostegal region (c): hepatic spine (HS), branchiostegal spine (BtS); antennal flagella (d): inner antennal flagella (IAF), Outer antennal flagella (OAF); dorsal view of abdominal segments (2 nd & 3 rd) (e); telson (f); thelycum (g); dorsal view of petasma (h); distal end of petasma (i).