Molecular Systematics of the Polytypic Species Cottus hypselurus (Teleostei: Cottidae)
Phylogenetic analyses of cytochrome b sequences support the prior hypothesis from genetic and meristic data that the Ozark Plateau endemic, Cottus hypselurus, is polytypic. These results support recognition of two species, C. hypselurus (Osage, Gasconade and Black Rivers) and Cottus sp. cf. hypselurus (Current, Eleven Point, Spring, and White rivers).Abstract

Strict consensus of 30 equally parsimonious trees for the 64 cyt b sequences. Bootstrap values are above branches (1000 pseudoreplicates), and decay indices are below branches. An asterisk indicates topotypic material. Abbreviations for Cottus hypselurus are depicted in Figure 2. Abbreviations for all taxa are in Material Examined

Cottus hypselurus sampling localities in the Ozark Plateau of North America. Star represents topotypic material of C. hypselurus. Inset is the distribution of C. hypselurus