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Zootaxa. 2018 Sep 18;4482(2):341-354. doi: 10.11646/zootaxa.4482.2.6.

A new species of Creagrutus (Characidae: Stevardiinae) from the upper Río Magdalena, Colombia.

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Grupo de Investigación en Zoología, Departamento de Biología, Facultad de Ciencias, Universidad del Tolima, Calle 42 #1B-1, Ibagué, Tolima, Colombia Colecciones Biológicas, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Claustro de San Agustín, Carrera 8 No. 15-08, Villa de Leyva, Boyacá, Colombia.


A new species of Creagrutus is described from several localities in the upper Río Magdalena drainage, Colombia. Creagrutus dulima n. sp. differs from all trans-Andean congeners by the combination of a relatively small orbital diameter, the shape and position of hooks on the pelvic-fin rays, in having the third infraorbital not in contact with the preopercle ventrally, and the presence of a dark, reticulated pigmentation pattern on the dorsal portion of body. The distribution of Creagrutus species in the Magdalena-Cauca River Basin is discussed, and an updated identification key for species of trans-Andean Creagrutus is provided.


Pisces, taxonomy, trans-Andean region, Ostariophysi, Characiformes


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