Aristeus antillensis A. Milne Edwards & Bouvier, 1909

Tavares, Carolina R. & Serejo, Cristiana S., 2007, Taxonomy of Aristeidae (Dendrobranchiata: Penaeoidea) from the central coast of Brazil, collected by the Revizee program, between 19 º and 22 ºS, Zootaxa 1585, pp. 1-44 : 19-23

Aristeus antillensis A. Milne Edwards & Bouvier, 1909

( Figs. 11 –13)

Aristeus antillensis A. Milne Edwards & Bouvier, 1909: 201 –203, pl. I, fig. 8–13; Crosnier & Forest, 1973: 290, 291; 1978: 61; Pérez Farfante, 1988: 6, fig. 7; Pérez Farfante & Kensley, 1997: 41.

Type locality: Nevis Island, Antilles.

Material examined: St. E0499, 13º23.826' S – 38º37.541' W to 13º20.872' S – 38º35.922' W, 761 m, 08/VI/ 2000, 6 females, cl: 42.2–54.2 mm, 5 males, cl: 27.0– 28.5 mm, MNRJ 14538. St. E0502, 14º28.385' S – 38º52.395' W to 14º24.813' S – 38º53.006' W, 522 m, 09/VI/2000, 13 females, cl: 41.2–50.0 mm, 5 males, cl: 27.9–29.5 mm, MNRJ 14555. St. E0503, 14º37.834' S – 38º52.029' W to 14º34.565' S – 38º 51.672' W, 740 m, 10/VI/2000, 19 females, cl: 40.7–52.4 mm, 9 males, cl: 27.2–29.7 mm, MNRJ 14552. St. E0522, 13º30.495' S – 38º38.977' W to 13º29.472'S – 38º37.943'W, 1144 m, 21/VI/2000, 4 females, cl: 33.1–42.6 mm, MNRJ 14535. St. E0534, 19º42.162' S – 39º21.608' W to 19º43.828'S – 39º24.583'W, 613 m, 29/VI/1999, 6 females, cl: 37.7–53.7 mm, 1 male, cl: 27.9 mm, MNRJ 14537. St. E0541, 21º13.644' S –40º14. 031' W to 21º10.040' S – 40º13.601' W, 557 m, 7 females, cl: 39.8–48.3 mm MNRJ 14551. St. E0498, 13º08.243' S – 38º24.766' W, to 13º08.058'S – 38º24.582'W, 623 m, 08/VI/2000, 9 females, cl: 39.0– 48.8 mm, 3 males, cl: 27.5–27.7 mm, MNRJ 14536.

Diagnosis: Rostrum curved upward with 3 proximal large teeth. Cervical carina reduced; hepatic spine absent. Abdominal somites 3–6 with a dorsal carina with small dorsal spines. Thelycum with a mesial shieldlike protuberance on sternite XII and sternite XIII with a rounded protuberance. Male sternum with a large spine on sternite XII. Petasma with distal extremity somewhat rounded; ventral costa smaller than lateral lobe, sligthly curved inward, not forming a hook. Appendix interna sub-triangular. Appendix masculina triangular, setose on inner margin, smaller and thinner than appendix interna.

Description: Rostrum curved upward with 3 proximal large teeth; some simple setae on ventral region of rostrum and in front of rostrum spines ( Fig. 11 a). Adrostral carina well defined; branchiocardiac carina extends for almost total length of carapace; cervical carina reduced; Branchiostegal and submarginal carina present; antennal and branchiostegal spines present ( Fig. 11 a).

Abdominal somites 1–3 with a depression that extends from the dorsum to the middle of pleurae; pleurae with marginal setae; tergum with a dorsal carina on abdominal somites 3–6; abdominal somites 3–6 ending in small spines ( Fig. 11 a).

Antennal scaphocerite approximately 1.7 X of antenular peduncle ( Fig. 11 a–c).

Right and left mandibles with incisor and molar processes distinct; palp present ( Fig. 11 d, 11e).

Maxillae, maxillipeds as for the family ( Figs. 11 f–g, 12a–c).

First pereopod dactyl approximately 1.5 X of palm; carpus of approximately the same length of dactyl, with 13 photophores; merus approximately 1.5 X of carpus, with a disto-lateral cuspidate setae ( Fig. 12 d).

Aristeus antillensis A. Milne Edwards & Bouvier, 1909 . Female, cl: 37.7 mm, MNRJ 14537, a) Sternum (numbers showing the eleventh and thirteenth sternites). Male, cl: 27.0 mm, MNRJ 14538, b) Sternum (numbers showing the eleventh and thirteenth sternites); c) Left petasma, anterior; d) Left petasma, posterior; e) Right appendix interna; f) Right appendix interna and appendix masculina; g) Left uropod; h) Telson.

Second pereopod dactyl approximately 1.4 X of palm; carpus approximately 1.8 X of dactyl, with nine photophores; merus approximately 1.5 X of carpus, with a disto-lateral cuspidate setae ( Fig. 12 e). Third pereopod dactyl approximately 1.4 X of palm; carpus approximately 1.5 X of dactyl and of the same length of merus ( Fig. 12 f).

Fourth pereopod dactyl approximately 1.5 X of propodus; propodus approximately 0.6 X of carpus; carpus approximately of the same length of merus ( Fig. 12 g).

Fifth pereopod dactyl approximately 0.6 X of propodus; propodus approximately 0.4 X of carpus; merus approximately 1.4 X of carpus; male coxa with an inner spine ( Fig. 12 h).

Females with sternites VIII–X with ventral spines; sternite XII with a shield-like plate; sternite XIII with a rounded protuberance (Fig. 13a). Males with sternites IX–XI with ventral spines; sternite XII with a large spine; sternite XIII with a truncate spine (Fig. 13b).

Petasma with distal extremity rounded; ventral costa smaller than lateral lobe, sligthly curved inward, not forming a hook (Fig. 13c–d). Appendix masculina sub-triangular (Fig. 13e–f). Appendix interna triangular, setose on inner margin, smaller and thinner than appendix masculina (Fig. 13f).

Variations: One male (MNRJ 14581) has 2 distal truncate small spines besides those rostral ones. One female (MNRJ 14594) has a disto-lateral cuspidate setae on merus of third pereopod, this seta is equal to those present on merus of first and second pereopods.

Distribution: Western Atlantic Ocean: Delaware to Florida; Gulf of Mexico; Caribbean Sea to French Guiana; Brazil (Maranhão and Amapá states) ( Pérez Farfante & Kensley, 1997; Silva et al., 2002).

Depth: 200–750 m, occasionally to 1100 m ( Pérez Farfante, 1988).

New records: Brazil—from Bahia to Espirito Santo states, between 522 m and 1144 m.

Figures

FIGURE 11. Aristeus antillensis A. Milne Edwards & Bouvier, 1909. Female, cl: 37.7 mm, MNRJ 14537, a) Habitus; b) Right antenna 1; c) Right antenna 2; d) Right mandible; e) Left mandible; f) Left maxilla 1; g) Left maxilla 2.

FIGURE 12. Aristeus antillensis A. Milne Edwards & Bouvier, 1909. Female, cl: 37.7 mm, MNRJ 14537, a) Right maxilliped 1; b) Right maxilliped 2; c) Right maxilliped 3; d) Right pereopod 1; e) Right pereopod 2; f) Right pereopod 3; g) Right pereopod 4; h) Right pereopod 5; i) Branchiae position, lateral view (numbers showing the fourth and the thirteenth segments).