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Type: Article
Published: 2021-11-24
Page range: 384-402
Abstract views: 662
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Two new species of Pyrgulopsis Call & Pilsbry, 1886 (Mollusca: Caenogastropoda: Hydrobiidae) from springs in the Rio Grande watershed in Texas

Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78542, USA.
Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78542, USA.
Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78542, USA.
Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78542, USA.
Edwards Aquifer Research and Data Center, Texas State University, San Marcos, TX, 78666, USA.
Edwards Aquifer Research and Data Center, Texas State University, San Marcos, TX, 78666, USA. Department of Biology, Texas State University, San Marcos, TX, 78666, USA.
Mollusca spring snails DNA barcoding morphology Trans-Pecos

Abstract

Pyrgulopsis Call & Pilsbry, 1886 is a genus of small (<5 mm) spring snails, usually endemic to single freshwater springs. Two new populations of Pyrgulopsis found in very small, isolated springs and spring runs in the mainstem Rio Grande watershed of western Texas are distinguished from congeners. Mitochondrial and nuclear sequences, morphometrics, and morphological characteristics support Pyrgulopsis rubra sp. nov. and Pyrgulopsis harrymilleri sp. nov. as distinct from other known Pyrgulopsis species, including the geographically proximate P. metcalfi.

 

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