Historical review on the type locality of Knodus victoriae (Steindachner 1907) (Teleostei: Characidae) and Loricaria parnahybae Steindachner 1907 (Teleostei: Loricariidae)

Abstract: Based on the information and evidence on the zoological expedition led by the senior Austrian zoologist Franz Steindachner in 1903, the examination of original species descriptions using material collected in this expedition, the scientific literature on this expedition, examination of specimens of Knodus victoriae, and the consultation of State decrees modifying the name of localities and municipalities, we propose herein updated and accurate type localities for Knodus victoriae and Loricaria parnahybae. The accurate type locality for both species is at the mouth of a stream that flows into the Parnaiba River, Alto Parnaíba municipality in the State of Maranhão, upper Parnaiba River basin, northeastern Brazil. This update in the type locality aims to avoid doubts and confusion that hinder biogeographic and taxonomic studies.