Pseudohemiodon devincenzii is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armored catfishes, and the subfamily Loricariinae, the mailed catfishes. This catfish is known only from a single specimen, the holotype, collected from the Uruguay River. The holoptype had a standard length of . Its specific name honours the Uruguayan naturalist , of the .
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