Published January 3, 2018 | Version v1
Taxonomic treatment Open

Pontophilus brevirostris Smith 1881

Description

Pontophilus brevirostris Smith, 1881

(Figs. 7A–C; 8 A–B)

Pontophilus brevirostris Smith, 1881: 435,436.— Smith 1882: 35, 36, pl. 7, figs. 1, la, b.— Smith 1887: 653.— Chace 1956: 14.— Thompson 1963: 262 –268, figs. 31b, 32.— Pequegnat 1970: 113.— Pequegnat et al. 1971: 10.— Williams 1974: 14, 40, fig. 37 (Key).— Williams & Wigley 1977: 8.— Young 1978: 175.— Wenner & Boesch 1979: 110.— Dardeau & Heard 1983: 17, fig. 8.— Williams 1984: 161, fig.113.

Material examined. 3 OvigerOus females (TL: 56 mm, 57 mm and 55 mm), POtiguar Basin, #MT– 65, 497 m, 04° 33' 39'' S, 036° 52' 99'' W, 13 May 2011, MOUFPE: 15.179. 1 female (TL: 61 mm), POtiguar Basin, #MT– 61, 457 m, 04° 47' 83'' S, 036° 11' 02'' W, 0 8 May 2011, MOUFPE: 15.245.

Diagnosis. Carapace with mid-dOrsal carina with 3–4 spines, lateral carina with 3 spines and a shOrt secOnd lateral carina with Only One spine; hepatic spine present; rOstrum very shOrt with a tOOth at each side Of base, nOt reaching the end Of cOrnea. Six pairs Of branchiae present, directed pOsteriOrly. First pereOpOd subchelate, stOut, with rudimentary exOpOd. SecOnd pereOpOd chelate and shOrt, reaching 1/2 Of merus Of first pereOpOd. AbdOmen with first fOur sOmites rOunded, fifth with lOw diverging carinae and 6th with twO parallel carinae. TelsOn tapering tO narrOw tip with shOrt central spine and 2 pairs Of superimpOsed lateral spines (mOdified frOm Williams 1974).

Geographical distribution. Western Atlantic: United States (Cape Hatteras), Gulf Of Maine tO Eastern Gulf Of MexicO, Off Dry TOrtugas, FlOrida; Cuba, Bahamas and Brazil: (Rio Grande do Norte) (Fig. 9) (Smith 1887; PeQuegnat 1970; Dardeau & Heard 1983; Williams 1984; Felder et al. 2009).

Bathymetric distribution. Occurring frOm 7 tO 426 m (PeQuegnat 1970; Dardeau & Heard 1983; Smith 1887; Felder et al. 2009), herein it was fOund between 457– 497 m.

Remarks. The specimens examined herein fits well with the Original descriptiOn given by Dardeau & Heard (1983), but shOwing sOme differences when cOmpared with specimens analyzed by Smith (1881), Williams (1974; 1984) and VázQuez-Bader & Gracia (2013) (see Table 2).

* Type-locality Pontophilus brevirostris clOsely resembles P. norvegicus (Sars, 1861) and P. spinosus (Leach, 1816), but these species can be distinguished frOm each Other as fOllOw (characteristics Of P. norvegicus and P. spinosus respectively in parentheses): rOstrum nOt reaching the end Of eyes (Fig. 8 A) (vs. surpassing the eyes, nOt exceeding eyes); rOstrum with three spines, being the central spine slightly larger than the Others (Fig. 8 A) (vs. central spine much larger than the Others, central spine slightly larger than the Others); carapace with 3 dOrsal spines (vs. 3–4 dOrsal spines with One rudimentary, 4 dOrsal spines); lateral carina with three spines (Fig. 8 A) (vs. 2 with 1 rudimentary, 3 spines); hepatic carina with One spine (vs. Only One spine, 2 spines). AccOrding tO Smith (1882), Williams & Wigley (1977) and Dardeau & Heard (1983), the species Of Pontophilus brevirostris inhabits cOntinental shelf and cOntinental slOpe), shOwing a wide bathymetric distributiOn Of 7 tO 497 m, and suppOrting a great variatiOn Of temperature Of 4.9 °C tO 17.2 °C. Thus, this the first repOrt Of P. brevirostris frOm sOuthwestern Atlantic (Brazilian waters).

Notes

Published as part of Alves-Júnior, Flavio De Almeida, Viana, Girlene Fábia Segundo, Araújo, Marina De Sá Leitão Câmara De & Souza-Filho, Jesser F., 2018, New records of the family Crangonidae (Decapoda: Caridea) from Southwestern Atlantic in Zootaxa 4369 (1), DOI: 10.11646/zootaxa.4369.1.2, http://zenodo.org/record/1135530

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Linked records

Additional details

Biodiversity

References

  • Smith, S. I. (1881) Preliminary notice of the Crustacea dredged, in 64 to 325 fathoms, off the south coast of New England, by the United States Fish Commisssion in 1880. Proceedings of the United States National Museum, 3, 413 - 452. https: // doi. org / 10.5479 / si. 00963801.172.413
  • Smith, S. I. (1882) Reports on the results of dredging, under the supervision of Alexander Agassiz, on the East Coast of the United States, during the summer of 1880, by the U. S. Coast Survey Steamer " Blake, " Commander J. R. Bartlett, U. S. N., Commanding. XVII. - Report on the Crustacea. Part I. Decapoda. Bulletin of the Museum of Comparative Zoology at Harvard College, 10, 1 - 104.
  • Smith, S. I. (1887) Report on the decapod Crustacea of the Albatross dredgings off the east coast of the United States during the summer and autumn of 1884. United States Commission of Fish and Fisheries Reports, 13, 605 - 705.
  • Chace, F. A. (1956) List of mysidacean, amphipod, euphausiacean, decapod, and stomatopod crustaceans. In: Springer, S. & Bullis, H. (Eds.), Collections by the Oregon in the Gulf of Mexico. List of crustaceans, mollusks, and fishes identified from collections made by the exploratory fishing vessel Oregon in the Gulf of Mexico and adjacent seas 1950 through 1955. United States Communication Fishes, Special Scientific Reports, Fisheries, 196, pp. 5 - 23.
  • Thompson, J. R. (1963) The bathyalbenthic caridean shrimps of the southwestern North Atlantic. Ph. D. Dissertation, Duke University, Durham, North Carolina, 504 pp.
  • Pequegnat, L. (1970) Deep-sea caridean shrimps with description of six new species. Texas A & M University Oceanographic Studies. Contributions on the Biology of the Gulf of Mexico, 4, 59 - 123.
  • Pequegnat, W. E., Pequegnat, L. H., Firth, R. W., James, B. M. J. R. & Roberts, T. W. (1971) Gulf of Mexico deep-sea fauna, Decapoda and Euphausiacea. Serial Atlas of the Marine, Environmental, American Geographical Society, 20, 1 - 12.
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  • Williams, A. B. & Wigley, R. L. (1977) Distribution of decapod Crustacea off Northeastern United States based on specimens at the Northeast Fisheries Center, Woods Hole, Massachusetts. NOAA Technical Reports, NMFS circular 407, 1 - 44.
  • Young, A. M. (1978) Superorder Eucarida, order Decapoda. In: Zingmark, R. G. (Ed.), An annotated checklist of the biota of the coastal zone of South Carolina. University of South Carolina Press, Columbia, pp. 171 - 185.
  • Wenner, E. L. & Boesch, D. F. (1979) Distribution patterns of epibenthic decapod, Crustacea along the shelf-slope coenocline, Middle Atlantic Bight, U. S. A. Bulletin of the Biological Society of Washington, 3, 106 - 133.
  • Dardeau, M. R. & Heard, R. W. (1983) Crangonid shrimps (Crustacea: Caridea), with a description of a new species of Pontocaris. Memoirs of the Hourglass Cruises, 6, 1 - 39.
  • Williams, A. B. (1984) Shrimps, Lobsters, and Crabs of the Atlantic Coast of the Eastern United States, Maine to Florida. Smithsonian Institution Press, Washington, D. C., 550 pp.
  • Felder, D. L., Alvarez, F., Goy, J. W. & Lemaitre, R. (2009) Decapoda (Crustacea) of the Gulf of Mexico, with comments on the Amphionidacea. In: Felder, D. L. & Camp, D. K. (Eds.), Gulf of Mexico Origin, Waters, and Biota. Vol. 1. Biodiversity. Texas A & M University Press, College Station, Texas, pp. 1019 - 1104.
  • Vazquez-Bader, A. R. & Gracia, A. (2013) Crangonidae and Glyphocrangonidae (Decapoda; Caridea) of the southern Gulf of Mexico. Zootaxa, 3669 (3), 367 - 383. https: // doi. org / 10.11646 / zootaxa. 3669.3.10
  • Leach, W. E. (1816) A tabular view of the external characters of four classes of animals, which Linne arranged under Insecta; with the distribution of the genera composing three of these classes into orders, & c. and descriptions of several new genera and species. Transactions of the Linnean Society of London, 11 (2), 306 - 400. https: // doi. org / 10.1111 / j. 1096 - 3642.1813. tb 00065. x