Two subspecies of the gyrinid species Dineutus emarginatus (Say) (Coleoptera: Gyrinidae) are generally recognized in North America: D. e. emarginatus (Say) and D. e. floridensis (Ochs). Analysis of 10 mensural characters using principal component analysis (PCA) revealed no differences in relation to geography in support of treating the two forms as separate subspecies. PCA showed no differing patterns of covariance for the 100 specimens studied, suggesting no differentiation among the character suites for the traits analyzed.
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