Aristaeopsis edwarsiana Jonhson 1867

Aristaeopsis edwarsiana (Jonhson, 1867)

(Figs. 5–7)

Penaeus edwarsianus Jonhson, 1867: 897.

Plesiopenaeus edwarsianus - Alcock, 1901: 35 –37; Bouvier, 1908: 64 –69, pl. 13, figs 13–17, pl. 14, figs. 1–8; Barnard, 1950: 624; Crosnier & Forest, 1973: 291 –294, figs. 98, 99 a–b; Crosnier, 1978: 86 –92, table 11, figs. 31 a–c, 32 a–c, 33 a–c; Kensley et al., 1987: 281; Pérez Farfante, 1988: 7, fig. 8; D’Incao, 1998: 1512–1513. Aristaeopsis edwarsiana - Pérez Farfante & Kensley, 1997: 36 –39, figs. 7–8; Dall, 2001: 413 –414, fig. 3.

Type locality: Off Madeira, Northeast Atlantic Ocean.

Material examined: St. D0503, 19º39.943’S – 38º38.435’W, 808 m, 29/VI/1999, 5 females, cl: 50.2–81.8 mm, 4 males, cl: 32.8–56.1 mm, MNRJ 13759. St. D0504, 19º42.734' S – 38º36.472' W, 910 m, 29/VI/1999, 7 males, cl: 53.2–60.3 mm, MNRJ 13762. St. D0506, 19º42.716' S – 38º36.497' W, 935 m, 29/VI/1999, 1 female, cl: 78.0 mm, 5 males, cl: 52.9–59.2 mm, MNRJ 13760. St. E0499, 13º23.826' S – 38º37.541' W to 13º20.872' S – 38º35.922' W, 761 m, 08/VI/2000, 1 female, cl: 27.7 mm, 1 male, cl: 39.7 mm, MNRJ 14569. St. E0503, 14º37.834' S – 38º52.029' W to 14º34.565' S – 38º51.672' W, 740 m, 10/VI/2000, 1 female, cl: 29.8 mm, 1 male, cl: 53.5 mm, MNRJ 14573. St. E0510, 15º48.503’S – 38º35.265’W to 15º47.383’S – 38º36.154’W, 599m, 12/ VI/2000, 3 females, cl: 36.8–49.6 mm, MNRJ 14571. St. E0517, 13º22.173’S – 38º36.566’W to 13º24.968’S – 38º38.277’W, 750 m, 19/VI/2000, 1 female, cl: 31.3 mm, MNRJ 14572. St. E0524, 19º43.663’S – 38º39.838’W to 19º42.684’S – 38º44.568’W, 925 m, 27/VI/2000, 1 female, cl: 69.1 mm, MNRJ 14578. St. E0534, 19º42.162' S – 39º21.608' W to 19º43.828'S – 39º24.583'W, 613 m, 29/VI/1999, 7 females, cl: 37.6–70.2 mm, 5 males, cl: 34.4–54.4 mm, MNRJ 14575. St. E0541, 21º13.644' S –40º14. 031' W to 21º10.040' S – 40º13.601' W, 557 m, 1 female, cl: 59.3 mm, 1 male, cl: 53.8 mm, MNRJ 14574. St. E0543, 21º23.944’S – 40º11.292’W to 21º28.481’S – 40º09.750’W, 666 m, 05/VI/2000, 1 female, cl: 27.7 mm, 1 male, cl: 39.7 mm, MNRJ 14570.

Diagnosis: Rostrum with 3 dorsal spines. Hepatic spine absent; gastro-orbital carina prominent, almost reaching cervical carina; cervical carina well defined, almost reaching dorsum of carapace. Final quarter of abdominal somite 2 with a dorsal carina that extends to abdominal somites 3–6, somites 3–6 ending in median spines. Thelycum with a large spine on sternite XII, sternite XIII with a semioval marginal setose plate. Males with a lanceolate plate mesially sulcated on sternite XII, sternite XIII with a small spine. Petasma, ventral costa little larger than lateral lobe, with distal extremity forming a hook; lateral lobe approximately of the same size of median lobe. Appendix interna oval, with cuspidate setae on distal extremity and simple setae on surface. Appendix masculina larger and thinner than appendix interna, with simple setae on distal extremity.

Description: Rostrum sligthly curved upward, with three dorsal spines; some simple setae on ventral region of rostrum and in front of rostrum spines (Fig. 5 a). Adrostral and branchiocardiac carina well marked; gastro-orbital carina prominent, almost reaching cervical carina; cervical carina well marked almost reaching dorsum of carapace; antennal, branchiostegal and hepatic carina present, directed to submarginal carina; antennal and branchiostegal spine present; orbital and hepatic spine absent (Fig. 5 a).

Abdominal somites 1–2 with sulci that extends from dorsum to half of length of pleurae; pleurae with marginal setae; tergum with a median carina from final quarter of abdominal somite 2 to abdominal somites 3–6; abdominal somites 3–6 ending in median spines (Fig. 5 a).

Antennal scaphocerite approximately 3/2 of antennular peduncle (Fig. 5 a–c). In adult males, the scaphocerite lamella is produced into a long and tapered structure, sub-equal in length to the enlarged part (Fig. 5 c).

Right and left mandibles with incisor and molar processes distinct; palp present (Fig. 5 d, 5e).

Maxillae, maxillipeds as for the family (Figs. 5 f–g, 6a–c).

First pereopod dactyl approximately 1.6X of palm; carpus approximately 1.5X dactyl; merus approximately 1.3X of carpus (Fig. 6 d).

Second pereopod dactyl approximately 1.4X of palm; carpus approximately 2.2X of dactyl; merus approximately 1.2X of carpus (Fig. 6 e).

Third pereopod dactyl approximately 1.4X of palm; carpus approximately 2.5X of dactyl and of the same length of merus; males with a small spine on coxa (Fig. 6 f).

Fourth pereopod dactyl approximately 0.4X of propodus; propodus approximately 0.8X of carpus; merus approximately 1.1X of carpus; males with a small spine on coxa (Fig. 6 g).

Fifth pereopod dactyl aproximately 0.3X of propodus; propodus and carpus approximately of the same length; merus approximately 1.1X of carpus; males with a spine on coxa (Fig. 6 h).

Females with a triangular plate on sternite XII, sternite XIII with a semioval plate with marginal setae (Fig. 7 a). Males with a lanceolate plate mesially sulcated on sternite XII, sternite XIII with a small spine (Fig. 7 b).

Petasma, ventral costa little larger than lateral lobe, with distal extremity forming a hook; lateral lobe approximately of the same size of median lobe (Fig. 7 c–d). Appendix masculina oval, with cuspidate setae on distal extremity and simple setae on surface (Fig. 7 e). Appendix interna larger and thinner than appendix masculina, with simple setae on distal extremity (Fig. 7 f).

Distribution: Indian Ocean: Bay of Bengal; Andaman Sea; Indonesia; Japan; South China Sea; Australia; Wallis and Futuna Islands. Eastern Atlantic Ocean: Azores; Madeira; Canary Islands; Portugal; Morocco; Western Sahara to South Africa; Madagascar; Arabian Sea. Western Atlantic Ocean: Gulf of Mexico; Caribbean Sea to French Guiana; Bermudas; Brazil (Pará, Amapá and Santa Catarina states) (Pérez Farfante & Kensley, 1997; Dall, 2001; Silva et al. 2002).

Depth: 200 m – 1850 m. (Pérez Farfante & Kensley, 1997; Dall, 2001)

New records: Brazil—from Bahia to Espirito Santo states, between 599 m and 935 m.