The Identity of Raymunida elegantissima (Crustacea: Decapoda: Anomura: Galatheidae) and Description of a Closely Related New Species from Japan

Abstract

Raymunida elegantissima (de Man, 1902) is redescribed on the basis of the holotype from the Moluccas, Indonesia. A new species of Raymunida Macpherson and Machordom, 2000, R.lineata, is described and illustrated on the basis of specimens collected from Japan. This species is close to R.elegantissima, but is distinguished by the structure of the fifth and sixth thoracic sternites, second to fourth abdominal segments, first segment of the antennal peduncle, and fixed finger of the cheliped. Raymunida lineata exhibits variation in the length of the mesial spine of the first antennal segment, which is a character used to divide the genus into two groups in the most recent key to the species of Raymunida.