Hemipenaeus carpenteri Wood-Mason, 1891

(Figs. 14–16)

Hemipenaeus carpenteri Wood-Mason, 1891: 189; Crosnier, 1978: 76 –80, fig. 27c–d, 28a–b, 29a; Gore, 1985: 122 –124; Crosnier, 1994: 369, fig. 5; Pérez Farfante & Kensley, 1997: 46; Dall, 2001: 418, fig. 6. Aristaeus (Hemipenaeus) Carpenteri - Alcock, 1901: 32 –33.

Type locality: Bay of Bengal.

Material examined: St. E0509, 15º47.725’ S – 38º 21.973’ W to 15º46.378’S – 38º24.839’W, 2076 m, 1 male, cl: 26.6 mm, MNRJ 14511. St. E0526, 20º06.565' S – 38º40.502' W to 20º 03.984' S – 38º36.676' W, 1637 m, 28/VI/2000, 1 male, cl: 12.9 mm, MNRJ 14509. St. E0528, 19º45.258' S – 39º03.003' W to 19º47.581' S – 38º59.827' W, 1237 m, 29/VI/2000, 4 females, cl: 21.3–35.0 mm, 1 male, cl: 22.9 mm, MNRJ 14528. St. E0537, 20º26.850' S – 39º41.636' W to 20º23.542' S – 39º48.698' W, 1642 m, 08/VII/2000, 1 male, cl: 23.5 mm, MNRJ 14527. St. E0538, 20º27.667' S – 39º38.101' W to 20º32.771' S – 39º37.650' W, 1680 m, 02/VII/2000, 1 female, cl: 38.3 mm, MNRJ 14585. St. E0544, 21º24.306' S – 40º02.847' W to 21º20.953' S – 40º02.847' W, 1159 m, 05/VII/2000, 1 female, cl: 23.3 mm, MNRJ 14583.

Diagnosis: Rostrum short, with 3 dorsal spines. Gastrorbital carina present. Cervical carina well marked, reaching the dorsum of carapace. Abdominal somite 3 with a large dorsal spine. Abdominal somites 4–6 with a dorsal carina. Female sternum with a triangular plate on sternite XII. Male sternum with a triangular plate on sternite XII. Petasma with distal extremity rounded; ventral costa with extremity enlarged and not curved; distal margin of lateral lobe oblique, of the same size or larger than median lobe. Appendix interna rounded, with cuspidate setae on distal extremity. Appendix masculina digitiform, larger, but thinner than appendix interna.

Description: Rostrum short, not exceeding cornea, with 3 dorsal spines; some simple setae on ventral region of rostrum and in front of rostrum spines (Fig. 14 a). Cervical carina well marked; branchiocardiac, branchiostegal, gastro-orbital and submarginal carina present; antennal and branchiostegal spines present (Fig. 14 a).

Abdominal somite 3 with a large spine, curved downward; abdominal somite 6 with a small terminal spine; abdominal somites 4–6 with a dorsal carina; abdominal pleurae with marginal setae (Fig. 14 a).

Antennal scaphocerite of approximately 1.7 X of antennular peduncle (Fig. 14 a-c).

Right and left mandibles with incisor and molar processes distinct; palp present (Fig. 14 d, 14e).

Maxillae, maxillipeds as for the family (Figs. 14 f–g, 15a–c).

First pereopod dactyl approximately 1.3 X of palm; carpus approximately of the same length of dactyl; merus approximately 1.7 X of carpus, with a disto-lateral cuspidate setae (Fig. 15 d).

Second pereopod dactyl approximately 1.4 X of palm; carpus approximately of the same length of dactyl; merus approximately 1.4 X of carpus, with a disto-lateral cuspidate setae (Fig. 15 e).

Third pereopod dactyl approximately 1.2 X of palm; carpus approximately 1.1 X of dactyl; merus approximately 1.4 X of carpus (Fig. 15 f).

Fourth pereopod dactyl approximately 0.6 X of propodus; propodus approximately 0.4 X of carpus; carpus approximately of the same length of merus (Fig. 15 g).

Fifth pereopod dactyl approximately 0.4 X of propodus; propodus approximately 0.4 X of carpus; carpus approximately 1.1 X of merus; male coxa with an inner spine (Fig. 15 h).

Female sternum with a ventral carina on sternites IX–XI and XIII, and a triangular plate on sternite XII (Fig. 15 a). Male sternum with a ventral carina on sternites IX–XI, and a triangular plate on sternite XII (Fig. 15 b).

Petasma with distal extremity rounded; ventral costa with extremity enlarged and not curved; distal margin of lateral lobe oblique, of the same size or larger than median lobe (Fig. 15 c–d). Appendix masculina rounded, with cuspidate setae on distal extremity (Fig. 15 e–f). Appendix interna digitiform, bigger, but thinner than than appendix masculina (Fig. 15 e–f).

Variation: One female (MNRJ 14528) has only 2 dorsal rostral spines.

Distribution: Indian Ocean: Madagascar; Réunion; Arabian Sea; Bay of Bengal. Pacific Ocean: Japan; Wallis and Futuna Islands; Western and Northeastern Australia; off Gulf of Panama; Galapagos Islands. Western Atlantic Ocean: off Bahamas; Gulf of Mexico; Caribbean Sea (Pérez Farfante & Kensley, 1997; Dall, 2001).

Depth: 900 m – 3900 m. (Pérez Farfante & Kensley, 1997; Dall, 2001)

New records: Brazil, from Bahia to Espirito Santo states, between 1159 m and 2076 m.