Nanosesarma sarii Naderloo and Türkay, 2009

Nanosesarma sarii Naderloo and Türkay, 2009 View in CoL

( Figs. 1D View Figure 1 , 5 View Figure 5 , 7G, H View Figure 7 )

Nanosesarma (Nanosesarma) minutum View in CoL — Tirmizi and Ghani, 1996: 159, fig. 61A–D [not Sesarma minutum De Man, 1887 ].

Nanosesarma minutum View in CoL — Jones, 1986: 160, pl. 46. [not Sesarma minutum De Man, 1887 ].

Nanosesarma sarii Naderloo and Türkay, 2009: 9212– 9218 View in CoL View Cited Treatment , figs. 1A, B, 2, 3.

Material examined. 3 males (CL: 4.6–5.6 mm, CW: 5.4–6.6 mm), LFSC.ZRC-188, India, Gujarat, Shivrajpur (21°19’55”N 68°57’02”E), coll. Jigneshkumar Trivedi, 3 February 2016 GoogleMaps .

Diagnosis. Carapace quadrangular, 1.13–1.17 times wider than long, widest at the level of second anterolateral teeth, evenly convex, sparsely plumose; lateral margins slightly concave, slightly converging posteriorly, dorsal surface covered with setal tufts and sparsely placed short and thin plumose setae, well-defined gastric region contained by deep groove, cardiac region with shallow groove. External orbital tooth sharply triangular, followed by smaller, slightly pointed epibranchial tooth. Dorsal surface finely granulated, 2 transverse granulated ridges originating from lateral margin, almost parallel to posterolateral margin, first ridge emerging just after epibranchial tooth, extending towards central region of carapace, second ridge originating near end of lateral margin, terminating at posterolateral edge, further 2 lessprominent, short ridges present, one emerging almost from the V-shaped notch between the anterolateral teeth, moving subparallel to first prominent ridge, other below first prominent one, nearly parallel to it ( Figs. 1D View Figure 1 , 5A View Figure 5 ). Basal antennal article long ( Fig. 5B View Figure 5 ), reaching to about half of second article, antennae flagellum short, reaching cornea.

Third maxillipeds with distinct rhomboidal gap when closed, ischium subrectangular, 1.37 times longer than merus, internal margin crenulated, with long setae; merus subovate 1.18 times longer than wide, with longitudinal furrow on outer surface, margins crenulated, internal margin with long setae. Exopod slender, with long flagellum ( Fig. 5C View Figure 5 ).

Chelipeds subequal; palm with entire outer surface covered with dense setae above lower row of granules, extending anteriorly to midlength of fingers ( Fig. 5D View Figure 5 ), 3 rows of granules, lowermost regularly granulated, extending to centre of pollex, middle one short,irregularly granulated, subparallel to lower one, uppermost short, irregularly granulated, upcurving, upper margin with crenulated longitudinal line, dorsal surface without oblique pectinate crest or granulated ridges. Dactylus (except tip) with dorsal surface completely tuberculated, densely set small tubercles on proximal part with 6 comparatively large granules, all covered by tufts of setae, cutting edge with small teeth. Pollex short, smooth, cutting edge with several small teeth and large prominent one medially, finger-tips spatulate ( Fig. 5E View Figure 5 ).

Pereopods medium-sized, P2 and P5 short, P3 and P4 longest, anterior meral margins weakly crenulated, bearing pointed subdistal tooth, posterior margins crenulated, posterodistal lobe denticulate. Propodi usually longer, about twice as long as wide with oblique carina on posterior face, 2 rows of long setae along propodus on anterior and posterior margins, P2– P4 with small brown setae on anterior margin of propodus, setae prominent and dense on P2. Dactyli distinctly more than half as long as propodus, with 8–10 spines, in 2 rows on posterior margin, 2 or 3 spines on anterior margin of P5, female P5 without any spine on anterior margin ( Fig. 5F View Figure 5 ).

Male pleon elongated, triangular,smooth, pleomere 6 almost twice as broad as long, telson markedly elongate, about 1.60 times as long as broad ( Fig. 5G View Figure 5 ).

G1long, nearly straight, corneous distal part curved outwards with long stiff setae, groove at proximal part, with terminal opening on lateral side ( Fig. 7G–H View Figure 7 ).

Remarks. The specimens examined in the present study agree with the holotype description of N. sarii provided by Naderloo and Türkay (2009). The morphological comparison of N. sarii with other species of Nanosesarma reported from India is provided in Tab. 1.

Distribution. Nanosesarma sarii is previously known from Persian Gulf, Gulf of Oman, and Pakistan ( Naderloo and Türkay, 2009). The present specimens represent the first record from India.