Deltopelta obliqua (Rathbun, 1898) Rathbun, 1898

Ng, Peter K. L. & Castro, Peter, 2016, Revision of the family Chasmocarcinidae Serène, 1964 (Crustacea, Brachyura, Goneplacoidea), Zootaxa 4209 (1), pp. 1-182 : 31

Deltopelta obliqua (Rathbun, 1898) n. comb.

( Figs. 5 E‒G; 22H; 29I; 37G; 50H; 57E; 85D; 89J)

Chasmocarcinus obliquus Rathbun, 1898a: 286 , pl. 7, figs. 6 [type localilty: Bahamas]; 1918: 55 [in key], fig. 27, pl. 14, figs. 1, 2.— Serène 1964a: 258 [in list].— Blow & Bailey 1992: 176 [in list].—Coelho & Coelho 1998: 813 [in list].—Ng et al. 2008: 76 [in list].—Felder et al. 2009: 1081 [in list].

Hephthopelta superba Boone, 1927: 16 , fig. 5 [Belize].

Chasmocarcinus superbus —Ng et al. 2008: 76 [in list].

Type material. Holotype male (5.2 × 5.1 mm) ( USNM 20509 ), Bahamas, SE Andros I., “in Tongue of Ocean ”, Albatross , stn 2651, 177 m, 13.04.1886.

Other material examined. U.S. Virgin Is. 1 male (cl 3.5 mm) ( USNM 67781 ).

Belize. 1 female (holotype of Hephthopelta superba Boone, 1927 ) (10.7 × 13.0 mm) ( PMNH), Glover Reef , off southern Belize, 885 m, Pawnee l, 20.04.1925.

Diagnosis. As for genus.

Remarks. The examination of the female holotype of Hephthopelta superba Boone, 1927 , clearly showed that Boone’s species is a junior subjective synonym of D. obliqua . Boone’s detailed description and illustration ( Boone 1927: 16, fig. 5) provide additional evidence of the synonymy.

Distribution. West Indies: Bahamas and Virgin Is. Depth: 177‒ 855 m.

Figures

FIGURE 5. Overall dorsal view of species of Chasmocarcinus, Amboplax n. gen. and Deltopelta n. gen. A, Amboplax peresi, Brazil: male 5.1 × 6.4 mm (ZRC 2015.217); B, Amboplax peresi, Brazil: ovigerous female 4.9 × 6.2 mm (ZRC 2015.217); C, Chasmocarcinus gemmatus n. sp., Costa Rica: male 7.7 × 11.6 mm (SIO C 1205); D, Chasmocarcinus latipes, Ecuador: male 10.5 × 14.5 mm (AMNH 1941 - 10668); E, Deltopelta obliquus, A, Bahamas: holotype male 5.2 × 5.1 mm (USNM 20509); F, Deltopelta obliquus, Belize: female 10.7 × 13.0 mm (PMNH, holotype of Hephthopelta superba); G, Deltopelta obliquus, Belize: female 10.7 × 13.0 mm (PMNH, holotype of Hephthopelta superba, after Boone 1927: fig. 5).