Aristaeomorpha foliacea ( Risso, 1827 )

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 : 5-9

Aristaeomorpha foliacea ( Risso, 1827)

( Figs. 2–4 )

Penaeus foliacea Risso, 1827: 69 , pl. 2, fig. 6.

Aristaeomorpha foliacea - Bouvier, 1908: 53 –56, pl. 11, figs. 1–14; Barnard, 1950: 625; Crosnier & Forest, 1973: 287, fig. 96 a; Crosnier, 1978: 52 –59, figs. 23–24; Kensley et al., 1987: 279 –280; Pérez Farfante, 1988: 6, fig. 6; Pérez Farfante & Kensley, 1997: 33 –36, figs. 5–6; Dall, 2001: 412, fig. 2.

Type locality: Off Matuku, Fiji.

Material examined: St. D0463, 21º48.348' S – 40º02.278' W, 571–623 m, 22/VI/1999, 3 females, cl: 53.1–57.2 mm, 10 males, cl: 33.4–40.0 mm, MNRJ 13775. St. D0464, 21º48.496' S – 40º01.539' W, 536 m, 22/ VI/1999, 1 female, cl: 41.6 mm, 4 males, cl: 34.5–40.0 mm, MNRJ 13776. St. D0502, 19º37.488' S – 38º41.909' W, 714.5 m, 29/VI/1999, 2 females, cl: 55.6–57.3 mm, 3 males, cl: 30.3–36.1 mm, MNRJ 13777. St. E0502, 14º28.385' S – 38º52.395' W to 14º24.813' S – 38º53.006' W, 522 m, 09/VI/2000, 10 females, cl: 17.9–40.6 mm, 7 males, cl: 31.3–38.4 mm, MNRJ 14562. St. E0503, 14º37.834' S – 38º52.029' W to 14º34.565' S – 38º51.672' W, 740 m, 10/VI/2000, 6 females, cl: 35.6–60.8 mm, 2 males, cl: 35.3–37.7 mm, MNRJ 14561. St. E0510, 15º48.503’S – 38º35.265’W to 15º47.383’S – 38º36.154’W, 599m, 12/VI/2000, 47 females, cl: 17.0– 43.8 mm, 20 males, cl: 20.2–35.9 mm, MNRJ 14567. St. E0511, 15º42.675’ S – 38º37.298’ W to 15º44.231’ S – 38º39.196’ W, 251 m, 12/06/2000, 11 females, cl: 22.2–37.6 mm, 7 males, cl: 21.6–27.9 mm, MNRJ 14820. St. E0517, 13º22.173’S – 38º36.566’W to 13º24.968’S – 38º38.277’W, 750 m, 19/VI/2000, 1 female, cl: 42.7 mm, 3 males, cl: 32.1–57.2 mm, MNRJ 14564. St. E0518, 13º21.199’S – 38º38.896’W to 13º24.353’S – 38º39.782’W, 518 m, 19/VI/2000, 2 females, cl: 29.6–40.4 mm, 1 male, cl: 34.2 mm, MNRJ 14565. St. E0534, 19º42.162' S – 39º21.608' W to 19º43.828'S – 39º24.583'W, 613 m, 29/VI/1999, 4 females, cl: 43.1–57.4 mm, 1 male, cl: 43.5 mm, MNRJ 14559. St. E0535, 19º58.936' S – 39º38.657' W to 19º56.087' S – 39º35.408' W, 1002 m, 01/VII/2000, 1 female, cl: 55.8 mm, MNRJ 14566. St. E0541, 21º13.644' S –40º14. 031' W to 21º10.040' S – 40º13.601' W, 557 m, 4 females, cl: 20.5–53.9 mm, 5 males, cl: 34.7–41.6 mm, MNRJ 14560.

Diagnosis: Rostrum with 4–12 dorsal spines. Hepatic spine and cervical carina present. Posterior region of abdominal somite 3 and abdominal somites 4–6 carinated, ending in small spines. Thelycum open, with a shield-like mesial protuberance, sternite XIII with a rounded protuberance. Petasma with some small sulci in dorsal and ventral view, divergent tips; distal extremity of ventral costa slightly curved outward. Appendix interna rounded, with some cuspidate setae on distal extremity. Appendix masculina smaller than appendix interna, nearly digitiform, with a sulcus along almost its extension.

Description: Rostrum with 4–12 dorsal spines, generally smaller than antennular peduncle in males and reaching scaphocerite tip in females; some simple setae on ventral region of rostrum and in front of rostrum spines ( Fig. 2 a). Adrostral carina well defined; cervical, branchiostegal and branchiocardiac carina present; antennal, branchiostegal and hepatic spines present ( Fig. 2 a).

Posterior region of abdominal somite 3 and abdominal somites 4–6 carinated, ending in small spines; abdominal pleurae setose on margin ( Fig. 2 a).

Antennal, scaphocerite of approximately 4/5 of antennular peduncle ( Fig. 2 a–c).

Right and left mandibles with incisor and molar processes distinct; palp present ( Fig. 2 d, 2e).

Maxillae, maxillipeds as for the family ( Figs. 2 f–g, 3a–c).

First pereopod dactyl approximately 1.2X of palm; carpus approximately 1.8X of dactyl; merus approximately 1.4X of carpus ( Fig. 3 d).

Second pereopod dactyl approximately 1.5X of palm; carpus approximately 2.2X of dactyl; merus approximately 1.3X of carpus ( Fig. 3 e).

Third pereopod dactyl approximately 1.4X of palm; carpus approximately 2.6X of dactyl and of the same size of merus ( Fig. 3 f).

Fourth pereopod dactyl approximately 0.4X of propodus; propodus approximately 0.8X of carpus; merus approximately 1.4X of carpus ( Fig. 3 g).

Fifth pereopod poorly setose, dactyl approximately 0.4X of propodus; propodus and carpus approximately of the same size; merus approximately 1.3X of carpus. Males with a spine on coxa ( Fig. 3 h).

Females with a shield-like mesial protuberance on sternite XII, sternite XIII with a rounded protuberance ( Fig. 4 a). Males with a large spine on sternite XII and with a small spine on sternite XIII ( Fig. 4 b).

Petasma with some small sulci in dorsal and ventral view, divergent tips; distal extremity of ventral costa sligthly curved outward ( Fig. 4 c–d). Appendix masculina rounded, with some cuspidate setae on distal extremity ( Fig. 4 e). Appendix interna smaller than appendix masculina, nearly digitiform, with a sulcus along almost all its extension ( Fig. 4 f).

Distribution: Indian Ocean: off east coast of South Africa; Mozambique; Madagascar; Réunion; Maldives Islands; Sri Lanka; Indonesia. Pacific Ocean: Philippines; Taiwan; Japan; Western Australia; New Caledonia; New Zealand; Wallis and Futuna Islands; Fiji. Eastern Atlantic Ocean: Bay of Biscay to Western Sahara; Azores; Madeira; Canary Islands; Mediterranean. Western Atlantic Ocean: Massachussets to Florida; Gulf of Mexico; Caribbean Sea to Venezuela; Brazil (Paraná, Santa Catarina and Rio Grande do Sul states) ( Pérez Farfante & Kensley, 1997; Dall, 2001).

Depth: 175 m – 1300 m ( Pérez Farfante, 1988; Pérez Farfante & Kensley, 1997).

New records: Brazil—from Bahia to Espirito Santo states, between 251 m and 1002 m.

Genus Aristaeopsis Wood-Mason, 1891

Integument glabrous. Rostrum moderately elongate in females and juvenile males, recahing beyond apex of scaphocerite; somewhat shorter in adult males, not reaching third of antennular peduncle segment, bearing two basal spines followed by single postrostral spine. Carapace with antennal and branchiostegal strong carina; orbital, postantennal, and hepatic spines absent. Cervical sulcus ventrally deep, rather weak dorsally, almost reaching dorsal midline; postcervical sulcus absent; postrostral carina reaching posteriorly about threefourths length of carapace; gastro-orbital, hepatic, and branchiocardiac carina strong. Eye with cornea slightly flattened; calathus moderately short, with strong mesial tubercle distally. Dorsal antennular flagellum short, flattened; ventral antennular flagellum elongate, terete, not modified in adult male. Scaphocerite in adult female with blade apically acute-angled, lateral marginal ridge ending in short spine at about four-fifths length; in adult male, lamella of scaphocerite produced distally into elongate slender structure, ovate in crosssection, subequal in length to proximal broad part; in female, lateral ridge falling short of distal margin of lamella.

Pereopods lacking exopods; merus and ischium of first and second pereopods unarmed. Fourth and fifth pereopods more slender, especially distally, than preceding pereopods. Thelycum open, with cup-like hollow formed by anteriorly acute median protuberance on sternite XII and strongly raised, roughly rectangular, anteriorly rounded median prominence flanked anteriorly by strong rounded lateral flaps on sternite XIII.

Petasma with lateral lobule reaching as far as median lobe; ventral costa slightly overreaching distal margin of lateral lobule, attached along entire length to adjacent flexible part of lateral lobule; its tip becoming mesially-directed conspicuous hook. First abdominal somite dorsally rounded; second somite with barely discernible rounded middorsal carina in posterior half; third to sixth somites with sharp carina, ending posteriorly in short spine. Telson pointed, with four pairs of small lateral movable spines in posterior half (modified from Pérez Farfante & Kensley, 1997).

Figures

FIGURE 2. Aristaeomorpha foliacea (Risso, 1827). Male, cl: 39.6 mm, MNRJ 14560, a) Habitus; b) Left antenna 1; c) Left antenna 2; d) Right mandible; e) Left mandible; f) Left maxilla 1; g) Left maxilla 2.

FIGURE 3. Aristaeomorpha foliacea (Risso, 1827). Male, cl: 39.6 mm, MNRJ 14560, a) Left maxilliped 1; b) Left maxilliped 2; c) Left maxilliped 3; d) Left pereopod 1; e) Left pereopod 2; f) Left pereopod 3; g) Left pereopod 4; h) Left pereopod 5; i) Branchiae position, lateral view (numbers showing the fourth and the thirteenth segments).

FIGURE 4. Aristaeomorpha foliacea (Risso, 1827). Female: 39.8 mm, MNRJ 14561, a) Sternum (numbers showing the eleventh and thirteenth sternites). Male, cl: 39.6 mm, MNRJ 14560, b) Sternum (numbers showing the eleventh and thirteenth sternites); c) Left petasma, anterior; d) Left petasma, posterior; e) Left appendix interna; f) Left appendix interna and appendix masculina; g) Right uropod; h) Telson.