Morphometric Analysis of Dineutus emarginatus (Say) (Coleoptera: Gyrinidae): Subspecies Designation Reconsidered

Laura Cook; Yves Alarie; Jennifer Babin-Fenske

doi:10.1649/879.1

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Laura Cook,¹ Yves Alarie,¹ Jennifer Babin-Fenske¹

¹Department of Biology, Laurentian University, Ramsey Lake Road, Sudbury, Ontario, P3E 2C6, CANADA

Abstract

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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Laura Cook, Yves Alarie, and Jennifer Babin-Fenske "Morphometric Analysis of Dineutus emarginatus (Say) (Coleoptera: Gyrinidae): Subspecies Designation Reconsidered," The Coleopterists Bulletin 60(3), 235-241, (2 November 2006). https://doi.org/10.1649/879.1

Received: 11 December 2005; Accepted: 1 April 2006; Published: 2 November 2006

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