Glyphocrangon longirostris ( Smith, 1882 )

Glyphocrangon longirostris ( Smith, 1882) View in CoL

( Fig. 4A, B View Figure 4 , Tab. 2)

Rhachocaris longirostris Smith, 1882: 51 View in CoL , pl. 5, fig. 1, pl. 6, fig. 1.

Glyphocrangon longirostris View in CoL – Pequegnat, 1970: 106; – Holthuis, 1971: 330, figs. 11–13; – Crosnier and Forest, 1973: 230, fig. 73a, b; – Chace, 1984: 8 (Key); – d’Udekem d’Acoz, 1999: 138; – Komai, 2004a: 35, fig. 2c, d; – Coelho et al., 2006: 55; – Cardoso and Serejo, 2007: 40, fig. 1; – Serejo et al., 2007: 139; – Felder et al., 2009: 1061.

Material examined. 69 (IN); 12 (M), 8 (F), 49(OF), Bpot-Talude #AR 75, MOUFPE 15.210. 2 (IN); 1 (F), 1 (OF), Bpot-Talude MT #71-2, MOUFPE 15.167. 6 (IN); 6 NI; 1 (M), 5 (OF), Bpot-Talude MT #72-2, MOUFPE 15.159.4 (IN); 1 (M), 3 (OF), Bpot-Talude # MT 73, MOUFPE 15.158. 16 (IN); 2 (M), 14 (OF), Bpot-Talude# MT 74, MOUFPE 15.165.8 (IN); 3 (M), 5 (OF), Bpot-Talude # MT 74-2, MOUFPE 15.185. 5 (IN); 5 (OF), Bpot-Talude # MT 75, MOUFPE 15.189. 3 (OF), Bpot-Talude # MT 75-2, MOUFPE 15.183. 3 (IN); 2 (M), 1 (F), Bpot-Talude # MT 82, MOUFPE 15.168. 5 (IN); 3 (M), 2 (F), Bpot-Talude # MT 83, MOUFPE 15.154. 14 (IN); 14 NI; 8 (M), 3 (F), 3 (OF), Bpot-Talude # MT 83-2, MOUFPE 15.157. 2 (IN); 1 (M), 1 (F), Bpot-Talude # MT 84, MOUFPE 15.171. 8 (IN); 6 (M), 2 (F), Bpot-Talude # MT 85, MOUFPE 15.180.

Distribution.WesternAtlantic: USA (Massachusetts), Brazil (Ceará and Rio Grande do Norte – Potiguar Basin, Bahia, Espírito Santo, Rio de Janeiro). Eastern Atlantic: Ireland to South Africa ( Holthuis, 1971; Komai, 2004a; Serejo et al., 2007; this study).

Bathymetric distribution. The species was previously recorded in depths of 1,280–2,500 m ( Holthuis, 1971) . In southeastern Brazil it has been recorded between depths of 1,402–2,076 m ( Serejo et al., 2007) , with the current specimens found between the depths of 908–2,094 m.

Remarks. The present specimens adhere closely to the descriptions of Smith (1882), Holthuis (1971), Komai (2004a) and Cardoso and Serejo (2007). Glyphocrangon longirostris shares a character with G. nobilis and G. alispina , such as the anterior lateral carina of the carapace armed with only one terminal spine ( Komai, 2004a). However, the absence of short setae on the carapace and abdomen, and the presence of a dorsal rugosity on the rostrum easily distinguish G. longirostris from those species.

Glyphocrangon longirostris View in CoL has a wide geographical distribution in the Atlantic Ocean (both western and eastern) ( Holthuis, 1971). However, this species was only recorded from Brazil rather recently by Komai (2004a). Later, Cardoso and Serejo (2007) recorded the species from the Campos Basin, off the coast of Rio de Janeiro. This study reports the occurrence of the species in the Potiguar Basin for the first time.

Females were more abundant and larger in size when compared to males ( Tab.2).