Two new species of Aphanodactylidae (Crustacea: Decapoda: Brachyura) from the Ryukyu and Ogasawara Islands, Japan, with the establishment of a new genus

Abstract

A new species of Takedactylus Naruse & Maenosono, 2012, and a new genus and species of Aphanodactylidae are described from Japan. Takedactylus compressus n. sp. is collected from Ogasawara Islands. This new species is distinct from the only congener, Takedactylus masatsunei, by the shapes of the carapace, third maxilliped and the ambulatory legs. Another new species, monotypic Lichtylus kaisha n. gen., n. sp., is distinct from all other aphanodactylid species, in generic level, in the shape and position of the palp of third maxilliped, relatively long and slender ambulatory legs, and a combination of other important characters, i.e. the contour of the carapace, the degree of gap between third maxillipeds, condition of the distoflexor corners of second to fifth ambulatory propodi, and relative length of ambulatory dactyli. The present study brings the number of aphanodactylid taxa to 7 genera and 15 species. http://zoobank.org/urn:lsid:zoobank.org:pub:0B01E38B-A542-4D22-966F-43B01E8D57D5 http://zoobank.org/urn:lsid:zoobank.org:act:C1EAADE1-1774-4EED-B62D-8EB2BFDC1C32 http://zoobank.org/urn:lsid:zoobank.org:act:195D7820-DB42-4BD6-AF66-F8C91A42B3FE http://zoobank.org/urn:lsid:zoobank.org:act:8A2C77F2-184D-4D7F-9317-03D6C8FC8D0D