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A hidden heelsplitter: Distribution of an undescribed endemic freshwater mussel in the Barrens Plateau

Kristin I. Womble·Amanda E. Rosenberger·Andrew R. Henderson
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Abstract

Malacologists generally acknowledge that the Alasminota holstonia (Tennessee Heelsplitter) populations in the Caney Fork, Elk, and Duck river drainages in the Barrens Plateau region of middle Tennessee likely represent a closely related, but distinct, species, collectively referred to as Alasminota sp. (Barrens Heelsplitter). Recent surveys indicate that the species persists in at least 5 streams: Collins River, Pocahontas Branch, Witty Creek, and Pepper Hollow Branch in the Caney Fork River drainage and Little Duck River in the Duck River drainage, with evidence of recruitment in 2 of these streams. These findings suggest a restricted distribution and highlight the need for taxonomic assessment through genetic analysis. If elevated to species status, the Barrens Heelsplitter would represent a narrow endemic that may require conservation attention, underscoring the ecological significance of Tennessee's Barrens Plateau Region.

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Kristin I. Womble, Amanda E. Rosenberger, Andrew R. Henderson. 2025-11-11. A hidden heelsplitter: Distribution of an undescribed endemic freshwater mussel in the Barrens Plateau. https://doi.org/10.1656/058.024.0sp1302

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