Glyphocrangon aculeata A. Milne-Edwards, 1881

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 : 5

Glyphocrangon aculeata A. Milne-Edwards, 1881

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

Glyphocrangon aculeatum A. Milne-Edwards, 1881: 5 . – A. Milne-Edwards, 1883, pl. 39.

Rhachocaris agassizii Smith, 1882: 43 , pl. 5, fig. 2.

Glyphocrangon aculeata – Spence Bate, 1888: 521, pl. 94, fig. 1; – Holthuis, 1971: 323, fig. 10; – Coelho and Ramos, 1972: 156; – Chace, 1984: 6 (key); – Ramos-Porto and Coelho, 1998: 342; – Komai, 2004a: 32, fig. 1a, b; – Coelho et al., 2006: 55; – Serejo et al., 2007: 139; – Felder et al., 2009: 1061; – Vázquez-Bader and Gracia, 2013: 371 .

Material examined. 60(IN); 21(M), 37 (F), 2 (OF), Bpot-Talude #AR 75, MOUFPE 15.203.4 (IN); 1 (M), 3 (OF), Bpot-Talude # MT 71, MOUFPE 15.149. 4 (IN); 4 (M), Bpot-Talude # MT 72, MOUFPE 15.148. 1 (M), Bpot-Talude # MT 72-2, MOUFPE 15.162. 2 (M), Bpot-Talude # MT 73, MOUFPE 15.156. 1 (IN); 1 (M), Bpot-Talude # MT 73-2, MOUFPE 15.150. 17 (IN); 10 (M), 6 (F), 1 (OF), Bpot-Talude # MT 74, MOUFPE 15.164. 5 (IN); 3 (M), 2 (OF), Bpot-Talude # MT 74-2, MOUFPE 15.184. 2 (M), Bpot-Talude # MT 75, MOUFPE 15.188. 1 (M), Bpot-Talude # MT 75-2, MOUFPE 15.169.

Distribution. Western Atlantic: USA (North Carolina), Gulf of Mexico, Caribbean Sea, Venezuela, Brazil (Ceará and Rio Grande do Norte – Potiguar Basin, Pernambuco, Bahia, Espírito Santo, Rio de Janeiro, São Paulo) ( Spence Bate, 1888; Komai, 2004a; Felder et al., 2009; this study).

Bathymetric distribution. The species has been recorded at depths of 443–1,760 m ( Holthuis, 1971; Komai, 2004a; Felder et al., 2009; Vázquez-Bader and Gracia, 2013). In the present study, the species was recorded between depths of 908–1,110 m.

Remarks. The examined specimens have the diagnostic characters of G. aculeata as described by Smith (1882), Holthuis (1971) and Komai (2004a). Glyphocrangon aculeata is easily recognized among the Atlantic species of the genus by the anterior fourth carina of the carapace forming a vertically compressed, acute lamina (wing-like spine).

Along the Brazilian coast, G. aculeata was first recorded by Spence Bate (1888) on the basis of material collected off Recife (state of Pernambuco), at a depth of 1,215 m. Komai (2004a) extended its distribution to the states of Bahia and Espírito Santo, between 707–1,760 m depth. The present record is the first from Potiguar Basin and fills a gap in the distribution of G. aculeata in the south Atlantic, suggesting that this species is much more widely distributed than currently assumed.

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

Figures

Figure 2. Glyphocrangon aculeata A. Milne-Edwards, 1881, dorsal (A) and lateral (B) views, male (TL-75.5 mm; Bpot-Talude MT# 72-2; MOUFPE 15.162), northeastern Brazil.