Macrobrachium crenulatum Holthuis 1950

Autor: Valencia, Diego M., Campos, Martha R.
Rok vydání: 2007
Předmět:
DOI: 10.5281/zenodo.6237549
Popis: Macrobrachium crenulatum Holthuis, 1950 Fig. 7 A���D Macrobrachium crenulatum Holthuis, 1950: 95. Macrobrachium crenulatum, Holthuis, 1952: 107.��� Chace & Hobbs, 1969: 99.��� Chace, 1972: 20.��� Mart��nez, 1973: 11.��� Escobar, 1979: 120.��� Rodr��guez, 1980: 123.��� Abele & Kim, 1989: 8. Macrobrachium carcinus, Galvis, 1986: 447. Macrobrachium olfersi, Galvis, 1986: 448. (For detailed synonymy refer to Holthuis, 1952). Material examined Bolivar: Between Matute - Turbaco, 6 May 1972, leg. L. E. Mart��nez, 1 female, INCODER, Cartagena. Choc��: Acand��, Monomacho stream, 15 m asl, 22 Aug 1995, leg. S. Usma, 2 males, ICN-MHN-CR 1595.��� Sapzurro, 50 m asl, 6 Aug 2004, leg. F. Jim��nez, 1 male, ICN-MHN-CR 2184. La Guajira: Riohacha, Negro River, 50 m asl, 27 Aug 1972, leg. P. Cala, 2 males, 1 female, ICN-MHN- CR 0044.��� Km 3 south Riohacha, 50 m asl, 27 Aug 1972, leg. P. Cala, 2 males, ICN-MHN-CR 2117. Magdalena: Santa Marta, Parque Nacional Natural Tayrona, Los Cedros, 5 - 6 Jul 1983, leg. G. Galvis, 2 males, ICN-MHN-CR 0 532, 2118.��� Parque Nacional Natural Tayrona, Piedras River, 1999, 1 male, Universidad de los Andes. Diagnosis Rostrum straight, apex nearly curved downward, shorter than scaphocerite, as long as antennular peduncle, upper margin with 11 to 14 teeth regularly spaced, including 4-5 teeth completely post orbital, lower margin 2 to 4 teeth; carapace smooth; abdomen smooth; telson terminal margin ending in sharp midpoint, flanked by two pairs of spinules, internal pair overreaching midpoint and external pair. First pair of pereopods overreaching scaphocerite with 1 / 2 of carpus. Second pair of pereopods prominent, different in shape and size, covered with conspicuous spines; the larger second pereopod overreaching scaphocerite with ca. 1 / 3 of merus; merus 1.03 to 1.19 x carpus length, 0.86 to 1.0 x palm length; carpus 1.61 to 2.14 x as long as wide, and 0.72 to 0.89 x palm length; palm prominent with rows of spines, and slightly pubescent on external surface, ventral margin with row of spines, which decreasing in size to base of finger, 2.06 to 2.38 x as long as wide, 1.30 to 1.47 x as long as high; fingers strongly gaping when closed, cutting edges thickly pubescent, 0.98 to 1.21 x palm length, a prominent tooth on 1 / 4 of proximal portion of each cutting edge, followed by 2 to 3 small teeth on its base. Size. The largest male TL 81.0 mm, CL 26.5 mm; the largest female TL 48.8 mm, CL 13.8 mm; non ovigerous females were examined. According to Holthuis (1952) the eggs of this species are small and numerous. Remarks This species is most similar to Macrobrachium hancocki Holthuis, 1950. The two can be distinguished by differences in the second pair of pereopods in adult males. The external surface of the palm of the large chela of the second pair of pereopods in M. hancocki has a clearly differentiated pubescent rectangular space, devoid of spinulation, which is not present in M. crenulatum. One male of Macrobrachium carcinus (Linn��e, 1758) (ICN-MHN-CR 0535), and one male of M. olfersii (Wiegmann, 1836) (ICN-MHN-CR 0532) from Santa Marta, Parque Nacional Natural Tayrona, Los Cedros, department of Magdalena, reported by Galvis (1986) are actually M. crenulatum (ICN-MHN-CR 2118, 0532).
Published as part of Valencia, Diego M. & Campos, Martha R., 2007, Freshwater prawns of the genus Macrobrachium Bate, 1868 (Crustacea: Decapoda: Palaemonidae) of Colombia, pp. 1-44 in Zootaxa 1456 on pages 16-18, DOI: 10.5281/zenodo.176325
{"references":["Holthuis, L. B. (1950) Preliminary descriptions of twelve new species of Palemonid prawns from American waters (Crustacea Decapoda). Proceedings Koninklijke Nederlandische Akademie van Wetenschapen, 53, 93 - 99.","Holthuis, L. B. (1952) A general revision of the Palaeminidae (Crustacea: Decapoda: Natantia) of the Americas. II. the subfamily Palaemoninae. Allan Hancock Foundation Publications, Occasional Papers, 12, 1 - 396.","Chace, F. A. & Hobbs, H. H. (1969) The freshwater and terrestrial Decapod Crustaceans of the West Indies with special reference to Dominica United States National Museum Bulletin, 292, 1 - 258.","Chace, F. A. (1972) The shrimps of the Smithsonian-Bredin Caribbean Expeditions with a Summary of the West Indian. Shallow-water species (Crustacea: Decapoda: Natantia). Smithsonian Contributions to Zoology, 98, 1 - 179.","Martinez, L. E. (1973) Distribucion biogeografica de camarones de agua dulce del genero Macrobrachium Bate, 1868 (Crustacea, Palaemonidae) en el norte de Colombia. Divulgacion Pesquera, 4, 1 - 12.","Escobar, J. G. (1979) Carideos (Palaemonidae y Atyidae) en los rios de la region de Santa Marta. Anales del Instituto de investigaciones Marinas de Punta de Betin, 11, 97 - 133.","Rodriguez, G. (1980) Crustaceos decapodos de Venezuela. Instituto Venezolano de Investigaciones Cientificas, Ed. Caracas, 1 - 494.","Abele, L. G. & Kim, W. (1989) The decapod crustaceans of the Panama Canal. Smithsonian Contributions to Zoology, 482, 1 - 50.","Galvis, G. (1986) Fauna dulceacuicola del Parque Tayrona. Caldasia, 15, 445 - 450.","Linnee, E. C. (1758) Systema Naturae per regna tria Naturae, secundum Classes, Ordines, Genera, Species, cum Characteribus, Differentiis, Synonymis, Locis, Ed. 10, 1, 1 - 824.","Wiegmann, A. F. (1836) Beschreibung einiger neuen Crustaceen des Berliner Museums aus Mexico und Brasilien. Archiv fur Naturgeschichte, 2, 145 - 151."]}
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