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. .
Zootaxa. 2021 Nov 24;5071(3):384-402. doi: 10.11646/zootaxa.5071.3.5.
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.
Pyrgulopsis Call Pilsbry，1886 是一个小型（<5 毫米）春季蜗牛属，通常局限于单个淡水泉。在德克萨斯州西部里奥格兰德河干流的非常小的孤立泉和泉流中发现的两个新的 Pyrgulopsis 种群与同属物种不同。线粒体和核序列、形态测量学和形态特征支持 Pyrgulopsis rubra sp. nov. 和 Pyrgulopsis harrymilleri sp. nov. 与其他已知的 Pyrgulopsis 物种不同，包括地理上相近的 P. metcalfi。
