Xanthias inornatus ( Rathbun 1898 )

TAVARES, MARCOS & MENDONÇA, JOEL BRAGA DE JR., 2022, Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean, Zootaxa 5146 (1), pp. 1-129 : 75-76

Xanthias inornatus ( Rathbun 1898)

( Fig. 41C, D )

Actaea inornata Rathbun, 1898: 583 [Type locality: 6º59’30”S, 34º47’00”W, off Cabedelo , Paraíba, Brazil, 36.5 m].

Trindade specimens. 1 female (MZUSP 39692), Brazil, off Espírito Santo, Trindade Island, Ponta Norte, 20º29’18.7”S, 29º20’18.3”W, J.B. Mendonça coll. 31.vii.2018, calcareous sand, 12.4 m .

Size of largest female: cl 12 mm, cw 15.5 mm.

Comparative material examined. None.

Distribution. Curaçao and Brazil (Rio Grande do Norte, Paraíba, Pernambuco and Trindade Island) ( Rathbun, 1930; Oliveira 1945; Coelho & Ramos 1972; Coelho et al. 1986; Coelho Filho & Coelho 1996). Xanthias inornatus has not been recorded from Trindade previously.

Ecological notes. Rare. Found in calcareous algae between 12 and 75 m. In Trindade, X. inornatus ( Fig. 41C, D ) was found near rocks in sandy bottom at 12 m.

Remarks. Rathbun (1898; 1930) mentioned that the female holotype of X. inornatus was captured “off Cape St. Roque” [Rio Grande do Norte], Brazil, 6º59’30”S, 34º47’00”W. However, these geographic coordinates actually refer to off Cabedelo, Paraíba, Brazil, which, therefore, is the correct type locality of X. inornatus .

Figures

FIGURE 41. A, B, Paraliomera dispar (Stimpson, 1871), habitus dorsal and ventral views, respectively, male cl 4.9 mm, cw 6.9 mm (MZUSP 41301). Note in (B) dense pilose area on the mesial side of the major chelipede (arrow). C, D, Xanthias inornatus (Rathbun 1898), habitus dorsal and ventral views, respectively, female, cl 12 mm, cw 15.5 mm (MZUSP 39692). Photographs by A. Pol.