Glyphocrangon sculpta ( Smith, 1882 )

Alves-Júnior, Flavio de Almeida & Souza-Filho, Marina de Sá Leitão Câmara de Araújo and Jesser F., 2017, New records and bathymetric distribution of deep-sea shrimps of the family Glyphocrangonidae (Decapoda: Caridea) from the Potiguar Basin, northeastern Brazil, Nauplius (e 2017002) 25, pp. 1-15 : 8-10

Glyphocrangon sculpta ( Smith, 1882)

( Fig. 5A, B , Tab. 2)

Rhachocaris sculpta Smith, 1882: 49 , pl. 5, fig. 3, pl. 6, fig. 3–3d.

Glyphocrangon sculptus – Smith, 1886: 608, 655, pl. 8, fig. 3, pl. 9, figs. 1, 2.

(?) Glyphocrangon sculptus – Pequegnat, 1970: 109.

Glyphocrangon sculpta – Holthuis, 1971: 279, figs. 2, 3; – Komai, 2004a: 39, fig. 4a, b; – Coelho et al., 2006: 55; – Serejo et al., 2007: 140.

Material examined. 1 (OF), Bpot-Talude # MT 82,

MOUFPE 15.193.

Distribution. Western Atlantic: East coast of USA (Massachusetts, Delaware), Caribbean Sea, Brazil (Potiguar Basin - Rio Grande do Norte, Bahia, Rio de Janeiro). Eastern Atlantic: from Iceland to Nigeria

( Holthuis, 1971; Komai, 2004a; 2010; this study).

Bathymetric distribution. Serejo et al. (2007) obtained specimens in Brazilian waters from 1,718– 2,137 m depth. The present specimen came from exclusively at 2,094 m.

Remarks. Holthuis (1971) diagnosed G. sculpta as having three teeth on the fifth pleonal pleuron as does the present specimen. However, Pequegnat (1970) and Komai (2004b) stated that the armature is variable, sometimes having only two teeth. As shown by previous authors ( Holthuis, 1971; Komai, 2004a), G. sculpta is easily recognizable among the Atlantic species by the spiny intercarinal spaces of the carapace, the clearly bidentate anterior fourth carina on the carapace and subcylindrical dactyli of the fourth and fifth pereopods, with the distal part horizontally cleft in females.

Glyphocrangon sculpta was assumed to exhibit amphi-Atlantic distribution ( Komai, 2004a), but the southern African records of G. sculpta in Stebbing (1908), Barnard (1950) and Kensley (1968; 1981) were referred to Glyphocrangon africana Komai, 2010 by Komai (2010). Thus, the distribution records of G. sculpta in the eastern Atlantic range from the Bay of Biscay to Nigeria ( Komai, 2010).

In the western Atlantic G. sculpta has a disjunct distribution, occurring along the east coast of the United States, between Massachusetts and Delaware, to the Caribbean ( Holthuis, 1971) and in Brazil, off the coast Rio Grande do Norte (present study), Bahia and Rio de Janeiro ( Komai, 2004a). The material studied herein is the second record of the species along the Brazilian coast, filling a gap in its geographical distribution.

Figures

Figure 5. Glyphocrangon sculpta (Smith, 1882), dorsal (A) and lateral (B) views, ovigerous female (TL-98.2 mm; Bpot-Talude MT# 82; MOUFPE 15.193), northeastern Brazil.