A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil

A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil

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A new species of Propimelodus from the middle course of the rio Araguaia is described.Propimelodus araguayae, No Chew Spray new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs.a different pattern), large eyes (29.7-34.8% of head length and 62.

7-74.7% of snout length vs.14.5-21.1% and 31-44% in P.

caesius and 9.5-19.7% and 17-38% in P.eigenmanni), anal-fin lobe present (vs.absent), premaxillary bone with three irregular rows of teeth (vs.

4-5 in P.caesius and 5-8 in P.eigenmanni), tip of anterior lateral process of basipterygium Lacrosse - Accessories - Miscellaneous at the same level as the tip of the anterior medial process (vs.anterior lateral process extending beyond the tip of the anterior medial process), total number of vertebrae (43-44 vs.47-48 in P.

caesius and 45-46 in P.eigenmanni) and total number of gill rakers (28-33 vs.20-23 in P.caesius and 19-20 in P.eigenmanni).

This new species is possibly endemic to the middle course of the rio Araguaia.