Hepomadus tener Smith, 1884

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 : 28-33

publication ID	https://doi.org/ 10.5281/zenodo.178428
DOI	https://doi.org/10.5281/zenodo.5684065
persistent identifier	https://treatment.plazi.org/id/03A6817C-743E-8A44-A1EF-FC55FB7BA0FF
treatment provided by	Plazi
scientific name	Hepomadus tener Smith, 1884
status

Treatment

Hepomadus tener Smith, 1884 View in CoL

( Figs. 17–19 View FIGURE 17 View FIGURE 18 View FIGURE 19 )

Hepomadus tener Smith, 1884: 409 View in CoL , pl. 9, figs. 7–8; 1887; Bouvier, 1908: 57, pl. 1, fig. 5, pl. 13, figs. 1–12; Burkenroad, 1936: 86 –89; Pérez Farfante, 1973: 442, figs. 1–8; 1994: 369; Dall, 2001: 419 –420, fig. 7.

Type locality: NW Atlantic, off eastern USA.

Material examined: St. D0504, 19º42.734' S – 38º36.472' W, 910 m, 29/VI/1999, 10 females, cl: 25.9– 45.7 mm, 10 males, cl: 34.2–39.7 mm, MNRJ 14100. St. D0506, 19º42.716' S – 38º36.497' W, 935 m, 29/VI/ 1999, 4 females, cl: 35.8–40.1mm, 4 males, cl: 24.4–37.5 mm, MNRJ 14099. St. E0505, 14º36.606' S – 38º49.345' W to 14º39.662' S – 38º50.154' W, 1089 m, 10/VI/2000, 2 females, cl: 33.3–35. 2 mm, 4 males, cl: 31.4–40.6 mm, MNRJ 14598. St. E0506, 14º36.579’S – 38º49.544’W to 14º 39, 605' S–38º 50. 134' W, 1067 m, 10/VI/2000, 4 females, cl: 32.5–39.8 mm, 11 males, cl: 17.6–37.8 mm, MNRJ 14600. St. E0507, 15º08.595' S – 38º40.638' W to 15º07.158' S – 38º40.542' W, 1026 m, 11/VI/2000, 5 females, cl: 26.1–38.9 mm, 4 males, cl: 27.0– 36.3 mm, MNRJ 14595. St. E0512, 15º50.532' S – 38º02.274' W to 15º50.599' S – 38º02.507' W, 1043 m, 13/VI/2000, 1 female, cl: 33.4 mm, 2 males, cl: 32.8–40.7 mm, MNRJ 14599. St. E0520, 13º21.837' S – 38º16.683' W to 13º26.455' S – 38º13.836' W, 2137 m, 20/VI/2000, 1 female, cl: 38.4 mm, MNRJ 14594. St. E0522, 13º30.495' S – 38º38.977' W to 13º29.472' S – 38º37.943' W, 1144 m, 21/VI/2000, 1 female, cl: 44.5 mm, MNRJ 14592. St. E0523, 19º42.569' S – 38º32.030' W to 19º42.685' S – 38º36.961' W, 922 m, 27/ VI/2000, 5 females, cl: 35.9–40.3 mm, 5 males, cl: 31.4–37.1 mm, MNRJ 14596. St. E0525, 20º08.145' S – 38º38.081' W to 20º07.308' S – 38º42.906' W, 1639 m, 28/VI/2000, 2 males, cl: 30.9–38.0 mm, MNRJ 14579. St. E0526, 20º06.565' S – 38º40.502' W to 20º03.984' S – 38º36.676' W, 1637 m, 28/VI/2000, 2 males, cl: 32.4– 39.5 mm, MNRJ 14584. St. E0527, 19º50.736' S – 39º10.817' W to 19º50.563' S – 39º14.496' W, 1402 m, 29/VI/ 2000, 1 female, cl: 21.3 mm, 3 males, cl: 23.6–41.2 mm, MNRJ 14589. St. E0528, 19º45.258' S – 39º03.003' W to 19º47.581' S – 38º59.827' W, 1237 m, 29/VI/2000, 3 females, cl: 35.4–50.0 mm, 3 males, cl: 21.9–40.9 mm, MNRJ 14602. St. E0519, 13º19.994' S – 38º19.654' W to 13º22.615' S – 38º21.960' W, 1730 m, 1 male, cl: 43.7 mm, MNRJ 14581. St. E0535, 19º58.936' S – 39º38.657' W to 19º56.087' S – 39º35.408' W, 1002 m, 01/VII/ 2000, 29 females, cl: 26.4–44.1 mm, 26 males, cl: 25.8–37.8 mm, MNRJ 14593. St. E0536, 20º24.008' S – 39º46.217' W to 20º27.001' S –39º44. 843' W, 1293 m, 02/VII/2000, 10 females, cl: 24.0–39.0 mm, 8 males, cl: 25.0– 40.3 mm, MNRJ 14583. St. E0537, 20º26.850' S – 39º41.636' W to 20º23.542' S – 39º38.943' W, 1545 m, 02/VII/2000, 1 male, cl: 22.0 mm, MNRJ 14580. St. E0538, 20º27.667' S – 39º38.101' W to 20º32.771' S – 39º37.650' W, 1680 m, 02/VII/2000, 2 females, cl: 25.9–40.4 mm, 1 male, cl: 31.5 mm, MNRJ 14585. St. E0540, 21º12.293' S – 38º39.838' W to 19º42.684' S – 38º44.568' W, 925 m, 27/VI/2000, 11 females, cl: 27.2– 40.4 mm, 3 males, cl: 31.9–36.2 mm, MNRJ 14601. St. E0544, 21º24.306' S – 40º02.847' W to 21º20.953' S – 40º02.847' W, 1159 m, 05/VII/2000, 10 females, cl: 22.3–55.7 mm, 5 males, cl: 33.9–39.1 mm, MNRJ 14583. St. E0547, 21º46.569' S – 39º53.364' W to 21º44.949' S – 39º55.117' W, 1105 m, 06/VII/2000, 1 female, cl: 40.2 mm, MNRJ 14597. St. E0548, 21º28.611' S – 39º40.303' W to 21º25.523' S – 39º40.443' W, 1799 m, 07/VII/ 2000, 2 females, cl: 34.6–35.9 mm, MNRJ 14582. St. E0550, 21º26.324' S – 39º49.113' W to 21º28. 583' S– 39º47.176' W, 1598 m, 07/VII/2000, 1 male, cl: 42.8 mm, MNRJ 14590. St. E0551, 21º07.780' S – 39º49.106' W to 21º.04.783' S– 39º48.698' W, 1642 m, 08/VII/2000, 1 female, cl: 19.4 mm, MNRJ 14591. St. E0552, 21º07.493' S – 39º46.423' W to 21º09.541' S – 39º46.079' W, 1694 m, 08/VII/2000, 2 females, cl: 33.5–44.7mm, MNRJ 14587.

Diagnosis: Rostrum curved sligthly upward, with 3 dorsal teeth. Cervical carina ending in an hepatic spine. Abdominal somite 3 with a large dorsal spine, somites 4–6 with small spines. Females with sternites IX–XI with ventral spines, sternite XII with an oval plate, and sternite XIII with sulcus. Males with an oval plate on sternite XII and a tubercle on sternite XIII. Petasma with distal extremity rounded, ventral costa with distal extremity curved outward, forming a hook. Appendix interna with distal extremity rounded. Appendix masculina triangular, larger and thinner than appendix interna.

Description: Rostrum curved sligthly upward, with 3 dorsal spines; some simple setae on ventral region of rostrum and in front of rostrum spines ( Fig. 17 View FIGURE 17 a). Females with rostrum larger and more curved than males, with distal extremity sligthly curved downward; on the average, rostrum of females approximately 0.9 X of carapace, while in males this ratio is approximately 0.5 X. Adrostral carina well marked; branchiocardiac carina extending from proximal region of carapace to its middle; cervical carina ending in an hepatic spine. Branchiostegal, gastro-orbital, and submarginal carina present; antennal and branchiostegal spines present ( Fig 17 View FIGURE 17 a).

Abdominal somites 1–3 with a depression that extends from dorsum to middle of pleurae. Pleurae with marginal setae; tergum with a median carina on somites 3–6. Abdominal somite 3 with a large dorsal spine, somites 4–6 with small spines. ( Fig. 17 View FIGURE 17 a).

Antennal scaphocerite sligthly longer than antennular peduncle ( Fig. 17 View FIGURE 17 a–c).

Right and left mandibles with incisor and molar processes distinct; palp present ( Fig. 17 View FIGURE 17 d, 17e).

Maxillae, maxillipeds as for the family ( Figs. 17 View FIGURE 17 f–g, 18a–c).

First pereopod dactyl approximately 2 X of palm; carpus approximately 2 X of dactyl; merus of approxiamtely the same size of carpus, with a disto-lateral cuspidate setae ( Fig. 18 View FIGURE 18 d).

Second pereopod merus of approximately the same size of carpus, with a disto-lateral cuspidate setae ( Fig. 18 View FIGURE 18 e).

Third pereopod dactyl approximately 1.5 X of palm; carpus approximately 2.2 X of dactyl, and approximately 1.2 X of merus ( Fig. 18 View FIGURE 18 f).

Fourth pereopod dactyl approximately 0.5 X of propodus; propodus approximately 0.7 X of carpus; carpus approximately 0.7 X of merus ( Fig. 18 View FIGURE 18 g).

Fifth pereopod carpus approximately 0.7 X of merus; males coxa with a lateral inner spine ( Fig. 18 View FIGURE 18 h).

Females with ventral spines on sternites IX–XI, sternite XII with an oval plate, and sternite XIII with sulcus ( Fig. 19 View FIGURE 19 a). Males with an oval plate on sternite XII and a tubercle on sternite XIII ( Fig. 19 View FIGURE 19 b).

Petasma with distal extremity rounded, ventral costa with distal extremity curved outward, forming a hook ( Fig. 19 View FIGURE 19 c–d). Appendix masculina with distal extremity rounded ( Fig. 18 View FIGURE 18 e). Appendix interna triangular, larger and thinner than appendix masculina ( Fig. 19 View FIGURE 19 e–f).

Variations: One male (MNRJ 14581) has the rostrum with 2 truncate spines, besides the three well developed proximal spines ( Fig. 17 View FIGURE 17 a).

Two specimens, one female (MNRJ 14594) and one male (MNRJ 14595), have a cuspidate setae on merus of third pereopod, equal to those of merus of first and second pereopods.

Distribution: Indian Ocean: Zanzibar; Madagascar; Maldive Islands; Bay of Bengal; northwest of Australia. Pacific Ocean: Philippines; Japan; Tuamotu Islands; Wallis and Futuna Islands; Hawaii. Eastern Atlantic Ocean: off Azores; Madeira; Canary Islands; Cape Verde. Western Atlantic Ocean: Gulf of Mexico; Brazil (Rio de Janeiro, Paraná and Santa Catarina states) ( Pérez Farfante & Kensley, 1997; D’Incao, 1998; Dall, 2001).

Depth: 765—5400 m. ( Pérez Farfante & Kensley, 1997; D'Incao, 1998; Dall, 2001).

New records: Brazil — from Bahia to Espírito Santo states, between 910 and 2137 m.