Scallasis andamaniensis ( Sakai, 2010 )

Komai, Tomoyuki, Poore, Gary C. B. & Fujita, Yoshihisa, 2020, Redescription of the poorly known ghost shrimp species, Scallasis amboinae Bate, 1888, review of the genus, and description of a new species from the Ryukyu Islands, Japan (Decapoda: Axiidea: Callianassidae), Zootaxa 4766 (3), pp. 401-420 : 407

Scallasis andamaniensis ( Sakai, 2010)

Callianassa tonkinae .— Sakai 2002: 503–506, figs 24, 25.

Trypaea andamaniensis Sakai, 2010: 1438 .

Scallasis andamaniensis .— Poore et al. 2019: 143.

Type locality. Andaman Sea, 09°00’N 97°53’E, 65– 70 m.

Diagnosis. Pleomere 6 1.2 times as long as wide. Telson 1 times as long as wide; greatest width 1.2 times posterior width. Maxilliped 3 ischium-merus 3 times as long as wide; merus free distal margin oblique. Female major cheliped ischium lower margin with 4 strong spines; merus lower margin with simple proximal spine; palm 1 times as long as carpus. Uropodal endopod anterior margin with small spine about two-thirds along.

Distribution. Known only from the type locality in the Andaman Sea.

Remarks. Sakai (2010) reidentified as Trypaea andamaniensis specimens from the Andaman Sea first identified by him as Callianassa tonkinae . The uropod, telson and maxilliped 3 appear identical to those of S. amboinae but the female cheliped is more robust and with a stronger more proximal meral spine. A juvenile male was reported without pleopod 1 and with a bi-articulate pleopod 2 (cf. S. caledonica , S. inermis n. sp. below).