Scallasis contipes ( Sakai, 2002 )

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 : 408

Scallasis contipes ( Sakai, 2002)

Callianassa contipes Sakai 2002: 523–525 , fig 35.— Sakai 2005: 80.

Cheramus contipes .— Sakai 2011a: 367.

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

Type locality. Andaman Sea, 07°30’N 098°57’E, 20– 38 m.

Diagnosis. Pleomere 6 1.3 times as long as wide, with lateral notches at about midlength. Telson 0.8 times as long as wide; greatest width 1.1 times posterior width. Maxilliped 3 ischium-merus 3.5 times as long as wide; merus free distal margin oblique.

Distribution. Presently known only from the type locality in the Andaman Sea.

Remarks. Scallasis contipes was originally described on the basis of four female specimens, one ovigerous, and two supplemental specimens (also female); none was intact. The rostrum, eyestalks and maxilliped 3 are typical of the genus. Chelipeds are unknown and Sakai’s (2002) figures do not show spiniform setae or marginal tooth on the uropodal rami, but this might be an omission. The telson appears to taper only slightly. Sakai (2002) separated Scallasis contipes from S. andamaniensis on an obliquely truncate distal margin on maxilliped 3 (vs truncate). Both were collected in the Andaman Sea, S. contipes at shallower depths.