Five new species of Hemibrycon (Characiformes: Characidae) from the Río Magdalena basin, Colombia

Román Valencia, César; Arcila Mesa, Dahiana K.

dc.creator	Román Valencia, César
dc.creator	Arcila Mesa, Dahiana K.
dc.date	2009-05-30
dc.date.accessioned	2016-05-03T15:30:57Z
dc.date.available	2016-05-03T15:30:57Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/5214
dc.identifier	10.15517/rbt.v58i1.5214
dc.identifier.uri	https://hdl.handle.net/10669/26970
dc.description	Five new fish species of the genus Hemibrycon are described from the Río Magdalena basin, Colombia, using morphometric, meristic and osteological characters. Hemibrycon paez (n=40) differs in number of lateral line scales (39 to 42 vs. 43 to 54), by the number of scales between lateral line and anal-fin origin (6 to 7 vs. 4 to 5) and between lateral line and dorsal-fin origin (6 to 7 vs. 8); H. quindos (n=66) distinguished from its congeners by one autopomorphy: Males with cartilaginous protuberance, rounded on the anal fin ray branched, along all rays (vs. cartilaginous protuberance not present on anal-fin rays in males), by the maxilla without a fold on its anterior end (vs. maxilla with folding only at posterior end), by the number of pored scales in the lateral line (35 to 40 vs. 40 to 46); H. raqueliae (n=117) distinguished by a widened first tooth on the maxilla with the remaining teeth decreasing sharply in size (vs. first tooth of maxilla slender, remaining teeth gradually diminishing), by the first maxilla tooth pentacuspid and wider than the others (vs. first tooth on maxilla unicuspid or tricuspid and of same size as the others); H. virolinica (n=34) distinguished by the posterior end of the extrascapular spine surpassing the postemporal (vs. posterior end of extrascapular not exceeding postemporal spine), by having the posterior end of the first proximal pteryigiophores of dorsal fin of the same size as the anterior edge (vs. the posterior end of the first proximal pteryigiophores of dorsal fin more elongated than the anterior edge); and H. yacopiae (n=78) is distinguished by the following autopomorphic characters: first laterosensorial infraorbitals canal in contact with the posterior end of antorbital (vs. laterosensorial canal not reaching posterior end of antorbital), by the tip of the supraoccipital spine widened (vs. supraoccipital spine acute), by the posterior end of ectopterygoids failing to come in contact with the quadrate bone (vs. in contact); by the posterior edge of palatine more widened than the anterior edge of ectopterygoids (vs. posterior edge of the palatine approximately the same size, except for H. paez).	en-US
dc.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica	en-US
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (1) March 2010	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (1) March 2010	es-ES
dc.source	Revista Biología Tropical; Vol. 58 (1) March 2010	pt-PT
dc.source	2215-2075
dc.source	0034-7744
dc.source	10.15517/rbt.v58i1
dc.title	Five new species of Hemibrycon (Characiformes: Characidae) from the Río Magdalena basin, Colombia	en-US
dc.title	Five new species of Hemibrycon (Characiformes: Characidae) from the Río Magdalena basin, Colombia	es-ES
dc.type	artículo original
dc.coverage	CRC	en-US

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