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1 July 2007 Elimia Comalensis (Gastropoda: Pleuroceridae) from the Edwards Plateau, Texas: Multiple Unrecognized Endemics or Native Exotic?
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Abstract

This research explored the distribution, morphological variation, and molecular systematics of Elimia comalensis (Gastropoda: Pleuroceridae) using geometric morphometrics (n  =  565) and mitochondrial DNA sequences (n  =  15). Elimia comalensis was originally documented as endemic to Comal Springs, Comal County, Texas, but recent collections found this species in multiple springs and drainages in Central Texas. Morphometric analyses showed a high amount of morphological overlap with no clear geographic patterning. Phylogenetic analysis of mt COI sequence data indicated that E. comalensis represents a single species, with no genetic divergence among isolated populations. We conclude that E. comalensis may be an unrecognized native exotic, a species endemic to one area that has been spread by humans and assumed to be part of the natural fauna.

DAVID M. HAYES, RUSSELL L. MINTON, and KATHRYN E. PEREZ "Elimia Comalensis (Gastropoda: Pleuroceridae) from the Edwards Plateau, Texas: Multiple Unrecognized Endemics or Native Exotic?," The American Midland Naturalist 158(1), (1 July 2007). https://doi.org/10.1674/0003-0031(2007)158[97:ECGPFT]2.0.CO;2
Received: 13 April 2006; Accepted: 1 November 2006; Published: 1 July 2007
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