TWO NEW SPECIES OF THE GENUS Gadila GRAY, 1847 (MOLLUSCA, SCAPHOPODA, GADILIDAE) FROM BRAZILIAN COAST
DOI:
https://doi.org/10.65259/rnzool.v4i1.99Keywords:
Brazil, continental slope, new species, taxonomyAbstract
This paper presents the description of two new species of the Scaphopoda, Gadila longa n. sp. and Gadila robusta n. sp. The material studied was collected in oceanographic expeditions by the research ship Natureza, from the Northeast Brazil Coastal Fishery Resource Management and Research Center – CEPENE, between 1999 and 2001, along the continental slope from Maranhão to Bahia (02º01’71”S e 40º52’04”W a 12º01’71”S and 37º26’97”W), northeastern Brazil, in depths between 93 and 690m. Gadila longa is distinguished from G. robusta by the general shell morphology and smaller lateral diameter. These two new species are similar with G. cobbi Lamprell & Healy, 1998, and G. desaintlaurentae Scarabino, 1995, from the Pacific Ocean, although shell morphology discrepancies are sufficient to recognize them as different species.
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References
Abbott, R.T. 1974. American Seashells. 2nd. edition. Van Nostrand Reinhold Co. New York. 663 pp.
Absalão, R.S., Silva, P.H. de A. & de Paula, T.S. 2005. Shell morphometrics in four species of Gadilidae (Mollusca, Scaphopoda) in Southwestern Atlantic Ocean, Brazil. Revista Brasileira de Zoologia, 22(1):175-179.
Caetano, C.H.S. & Absalão, R.S. 2005. A new species of the genus Polyschides Pilsbry & Sharp, 1898 (Mollusca, Scaphopoda, Gadilidae) from Brazilian waters. Zootaxa, 871, 1-10.
Emerson, W.K. 1962. A classification of the Scaphopoda Mollusks. Journal of Paleontology, 36, 461-483.
Henderson, J.B. 1920 A monograph of the East American Scaphopoda Mollusks. United States National Bulletin, 111, 1-177.
Lamprell, K.L. & Healy, J.M. 1998. A revision of the Scaphopoda from Australian waters (Molusca). Records of the Australian Museum, supplement 24, 1-189.
Diaz, J.M. & Puyana, M.H. 1994. Moluscos del Caribe Colombiano: um catálogo ilustrado. Santafe de Bogota: Colciencias y Fundacion Natura Colombia. 291 pp.
Rios, E.C. 1985. Seashells of Brazil. Museu Oceanográfico da Fundação Universidade do Rio Grande, Rio Grande. 328 pp.
Rios, E.C. 1994. Seashells of Brazil. 2nd. edition. Fundação Universidade do Rio Grande, Rio Grande. 492 pp.
Scarabino, V. 1980. Cadulus tetraschistus (Watson), an earlier name for C. quadridentatus (Dall) and C. incisus Bush (Scaphopoda). Veliger, 94, 11-13.
Scarabino, V. 1995. Scaphopoda of the tropical Pacific and Indian Oceans, with descriptions of 3 new genera and 42 new species. In: Bouchet, P. (ed.) Résultats des campagnes Musorstom, vol. 14. Mémoires du Muséum national d’Histoire naturelle, 167, 189-379.
Shimek, R. L. 1989. Shells morphometrics and systematics: a review of the slender, shallow-water Cadulus of the Northeastern Pacific (Scaphopoda: Gadilida). Veliger, 32, 233-246.
Steiner, G. & Kabat, A.R. 2001. Catalog of supraspecific taxa of Scaphopoda (Mollusca). Zoosystema 23 (3): 433-460.
Steiner, G. & Kabat, A.R. 2004. Catalog of species-group names of Recent and fossil Scaphopoda (Mollusca). Zoosystema 26 (4): 549-726.
Turner, R.D. 1955. Scaphopods of the Atlantis dredgings in the Western Atlantic with a catalogue of the Scaphopod types in the Museum of Comparative Zoology. Deep Sea Research, supplement, 3, 309-320.
