Samadinia soela (Griffin and Tranter, 1986)

Islam, Atikul, Banerjee, Abhishek, Wati, Sisca Meida, Banerjee, Sumita, Shrivastava, Deepti & Srivastava, Kumar Chandan, 2022, Crabs (Crustacea, Decapoda) from the Sea off East and Southeast Asia Collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 2. Timor Sea, Bulletin of the National Museum of Nature and Science. Series A, Zoology 48 (1), pp. 5-24 : 18

Samadinia soela (Griffin and Tranter, 1986) ( Figs. 6D–E , 7 )

Material examined. RV Hakuhō Maru KH-72-1 cruise, sta. 26 (Timor Sea; 09°27.0′S, 127°58.6′E –09°285.0′S, 127°56.1′E, 610–690 m depth), 3 m beam trawl; June 19, 1972; 1♂ (NSMT-Cr 29267: CB 5.8 mm excluding branchial spines, CL 9.8 mm excluding pseudorostral spines), 2 ♀♀ (NSMT-Cr 29268: CB 8.2 mm, CL 12.8 mm; CB 10.5 mm, CL 17.7 mm).

Remarks. Samadinia soela was originally described as a species of Rochinia from the North West Shelf, Australia, but was transferred to Samadinia by Lee et al. (2021). The specimens at hand agree well with the original description by Griffin and Tranter (1986b) and also with that of Takeda and Moosa (1990). Samadinia soela resembles S. sibogae from the Ceram Sea in having the long, divergent pseudorostral spines, the long, sharp branchial spines, and the laterally-flattened hepatic lobe continuous with the postorbital lobe. Samadinia soela is, however, distinguished from S. sibogae by the robust pseudorostral spines, the cardiac region armed with an obtuse tubercle instead of a spine, the sharp and robust preorbital lobe (blunt and small in S. sibogae ), the postorbital lobe distinctly broadened anteriorly and continuous dorsally with the narrowed hepatic lobe ( Fig. 6E ) (weakly broadened anteriorly and continuous dorsally with rounded hepatic lobe in S. sibogae ) (see also Griffin and Tranter, 1986b, figs. 12–13; Takeda and Moosa, 1990, fig. 4D–E, pl. 2 fig. C–D).

The G1 of S. soela is illustrated for the first time, though it does not appear to present any distinctive features compared to its congeners ( Fig. 7 ).

Distribution. Flores Sea, Timor Sea, and North West Shelf of Australia; 558–650 m depth.

Figures

Fig. 6. A–B: Laubierinia carinata (Griffin and Tranter), female (NSMT-Cr 29265: CB 11.1mm×CL 17.2mm excluding pseudorostral spines) from sta. 28 (Timor Sea, 295–296m depth). C: Samadinia boucheti (Richer de Forges and Ng), female (NSMT-Cr 29266: CB 12.4mm×CL 18.3mm including pseudorostral spines) from sta. 27 (Timor Sea, 465–490m depth). D–E: Samadinia soela (Griffin and Tranter), female (NSMT-Cr 29267: CB 6.0mm excluding branchial spines×CL 9.7mm excluding pseudorostral spines) from sta. 26 (Timor Sea, 610–690m deep).

Fig. 7. Samadinia soela (Griffin and Tranter), male (NSMT-Cr 29267: CB 5.8 mm excluding bran- chial spines×CL 9.8mm excluding pseudoros- tral spines) from sta. 26 (Timor Sea, 610–690m deep). G1 in pleonal view (A) and distal part of the same in sternal view (B). Scales=1mm.