Abstract
Chaetostomayurubiense, a new species, is described from the Rios Aroa, Urama, and Yaracuy basins, three stream systems that empty into the Golfo Triste of the Caribbean Sea of northern Venezuela. Chaetostoma yurubiense is distinguished from the syntopic C. stannii by several features, including the presence of a fleshy black keel at the posterior tip of the supraoccipital bone, a narrower head and more elongate body, pigmentation characteristics of the body and caudal and dorsal fins, shape of the caudal fin, and five (vs four) anal-fin rays. Chaetostoma yurubiense is distinguished from all other described species of Chaetostoma inhabiting Venezuela by combinations of these characteristics and the number and shape of the cheek spines.
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