Aristeus antennatus Risso 1816
Creators: name: Tavares, Carolina R.
name: Serejo, Cristiana S.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Aristeidae
Aristeus
Aristeus antennatus

description: Aristeus antennatus (Risso, 1816)
(Figs. 8–10)
Peneus antennatus Risso, 1816: 95, pl. u, fig. 6.
Aristeus antennatus - Duvernoy, 1841:101–108, pl. IV–V; Bate, 1881: 188; Bouvier, 1908: 71 –75, pl. XI–XII; Crosnier & Forest, 1973: 288, 290, 291, 294, 353, 362; Crosnier, 1978: 71 –74; Pérez Farfante & Kensley, 1997: 39 –40.
Type locality: Mediterranean sea, off Nice.
Material examined: St. E0496, 13º17.580' S – 38º17.599' W to 13º12.030' S – 38º14.873' W, 1717 m, 07/ VI/2000, 3 females, cl: 50.2–55.9 mm, 3 males, cl: 45.8–60.9 mm, MNRJ 14532. St. E0526, 20º06.565' S – 38º40.502' W to 20º03.984''S – 38º36.676''W, 1637 m, 28/VI/2000, 3 females, cl: 39.6–59.7 mm, 3 males, cl: 49.4–53.0 mm, MNRJ 14534. St. E0527, 19º50.736' S – 39º10.817' W, to 19º50.563'S – 39º14.496'W, 1402 m, 29/VI/2000, 1 female, cl: 66.7 mm, MNRJ 14557. St. E0537, 20º26.850' S – 39º41.636' W to 20º23.542' S – 39º48.698' W, 1642 m, 08/VII/2000, 3 females, cl: 45.4–56.5 mm, MNRJ 14531. St. E0548, 21º28.611' S – 39º40.303' W, 1799 m, 07/VII/2000, 1 male, cl: 62.0 mm, MNRJ 14529. St. E0549, 21º25.738' S – 39º43.946' W to 21º22.965' S – 39º44.646' W, 1718 m, 07/VII/2000, 2 females, cl: 57.0– 61.5 mm, 2 males, cl: 51.3–61.9 mm, MNRJ 14550. St. E0552, 21º07.493' S –39º46. 423' W to 21º09.541' S – 39º46.079' W, 1694 m, 1 male, cl: 50.5 mm MNRJ 14530.
Diagnosis: Rostrum curved upward on proximal region and curved downward on distal region, with 3 big proximal teeth, ventral margin with some simple setae. Cervical carina absent; hepatic sulcus present. Abdominal somites 3–6 with dorsal spines, the first one the largest and the last one extremely reduced. Thelycum with a semioval plate on sternite XII and with a spine on sternite XIII. Male sternum with a semioval plate on sternite XII. Petasma with ventral costa smaller than lateral lobe, curved outward, with extremity enlarged, not forming a hook; median lobe smaller than lateral lobe. Appendix interna semioval with cuspidate setae on distal extremity. Appendix masculina filiform, smaller and thinner than appendix interna, with marginal simple setae.
Description: Rostrum curved upward on proximal region and curved downward on distal region, with 3 big proximal teeth; some simple setae on ventral region of rostrum and in front of rostrum spines (Fig. 8 a). Adrostral carina well defined; cervical carina absent; branchiocardiac, branchiostegal, gastro-orbital and submarginal carina present; hepatic sulcus present; antennal and branchiostegal spines present (Fig. 8 a).
Abdominal somites 1–3 with a depression that extends from the dorsum to half of pleurae; pleurae with marginal setae; tergum with medial carina on somites 3–6; abdominal somites 3–6 with dorsal spines, the first is the largest and the last extremely reduced (Fig. 8 a).
Antennal scaphocerite approximately 1, 6 X of antennular peduncle (Fig. 3 a–c).
Right and left mandibles with incisor and molar processes distinct; palp present (Fig. 8 d, 8e).
Maxillae, maxillipeds as for the family (Figs. 8 f–g, 9a–c).
First pereopod dactyl approximately 1.5 X of palm; palm with setae tufts on proximo-ventral region; carpus approximately 1.5 X of dactyl; merus approximately 1.5 X of carpus, with one disto-lateral cuspidate setae (Fig. 9 d).
Second pereopod dactyl approximately 1.3 X of palm; carpus approximately 2 X of dactyl; merus approximately 1.2 X of carpus, with a disto-lateral cuspidate setae (Fig. 9 e).
Third pereopod dactyl approximately 1.3 X of palm; carpus approximately 2.6 X of dactyl and of the same size of merus; male coxa with a small inner spine (Fig. 9 f).
Fourth pereopod dactyl approximately 0.5 X of propodus; propodus approximately 0.6 X of carpus; carpus approximately 0.8 X of merus; male coxa with a small inner spine (Fig. 9 g).
Fifth pereopod 5, dactyl approximately 0.5 X of propodus; propodus approximately 0.5 X of carpus; carpus approximately 0.8 X of merus; male coxa with an inner spine (Fig. 9 h).
Females with sternites IX–XI with ventral spines; sternite XII with an oval plate ending in a spine; sternite XIII with a ventral spine (Fig. 10 a). Males with sternite XI with a ventral carina; sternite XII with an oval plate ending in a spine (Fig. 10 b).
Petasma with ventral costa smaller than lateral lobe, curved outward, with extremity enlarged, not forming a hook; median lobe smaller than lateral lobe (Fig. 10 c–d). Appendix masculina semioval with cuspidate setae on distal extremity (Fig. 10 e). Appendix interna filiform, smaller and thinner than appendix masculina, with marginal simple setae (Fig. 10 f).
Variation: One male (MNRJ 14532) has one disto-lateral cuspidate setae on merus of third pereopod besides those on first and second pereopods.
Distribution: Indian Ocean: Mozambique; Zanzibar; Madagascar; Réunion; Maldive Islands. Eastern Atlantic Ocean: from Portugal to Cape Verde Islands and Azores; Mediterranean; Natal; South Africa (Pérez Farfante & Kensley, 1997).
Depth: 150 m – 1440 m. (Pérez Farfante & Kensley, 1997)
New records: Western Atlantic Ocean—Brazil, from Bahia to Espirito Santo states, between 1402 m and 1799 m.
description: Published as part of 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, pp. 1-44 in Zootaxa 1585 on pages 14-19, DOI: 10.5281/zenodo.178428