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Zookeys. 2019 Dec 10;898:103-120. doi: 10.3897/zookeys.898.46917. eCollection 2019.

A new species of stygobitic snail in the genus Antrorbis Hershler & Thompson, 1990 (Gastropoda, Cochliopidae) from the Appalachian Valley and Ridge of eastern Tennessee, USA.

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Department of Zoology, Southern Illinois University, Carbondale, IL 62901, USA.
Department of Biology, The University of Texas Rio Grande Valley, Edinburg, TX, USA.
Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Knoxville, TN 37996, USA.
Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
Department of Biological Sciences, The University of Alabama in Huntsville, Huntsville, AL 35899, USA.
Department of Biodiversity, Earth and Environmental Science, Drexel University, Philadelphia, PA 19104, USA.
Department of Malacology, Academy of Natural Sciences of Drexel University, Philadelphia, PA 19104, USA.
Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, USA.


A new species of cave snail (Littorinimorpha: Cochliopidae) in the genus Antrorbis is described from the dark zone of two caves in the Appalachian Valley and Ridge province in eastern Tennessee, United States. The Tennessee Cavesnail, Antrorbis tennesseensis Perez, Shoobs, Gladstone, & Niemiller, sp. nov. is distinguished from its only known congener, Antrorbis breweri, by the absence of raised tubercles on its finely spirally striate protoconch, and its unique radular formula. Moreover, A. tennesseensis is genetically distinct from A. breweri based on substantial divergence at the mitochondrial CO1 locus. This is the first cavesnail to be described from the Appalachian Valley and Ridge (AVR) physiographic province in the state of Tennessee, which previously represented a substantial gap in the distribution of stygobitic (i.e., aquatic, subterranean-obligate) gastropods.


Antrorbis ; Cochliopidae ; cavesnail; stygofauna; systematics

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