taxonID	type	description	language	source
4A8428894DFA5BC0B2C1E995B0CC7C10.taxon	diagnosis	Diagnosis. Shell small, conical in form, protoconch sculptured with coarsely honeycomb-like pits, teleoconch with curved ribs which are at the carina modified into regularly spaced shovel-shaped spines (Figs 14, 24), body whorl always open-coiled, some specimens with a corkscrew morphology, apertures large, ovate, rarely rounded, often trumpet-like.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
4A8428894DFA5BC0B2C1E995B0CC7C10.taxon	etymology	Etymology. The name is derived from Greek phreato = groundwater environment, and Viesca (referring to the town of Viesca where the shells were found).	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	description	Figs 2 - 13, 14 - 17, 18 - 24	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	etymology	Etymology. Name is derived from the Latin word Phreatoviesca spinosa = having spines.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	materials_examined	Referred material. Coahuila. Viesca, Spring " Tunel 7 ", UJMC 500 - 511, A. Czaja, J. L. Estrada-Rodriguez 10 / vi / 2015 and 15 / v / 2019.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	diagnosis	Diagnosis. Like for the genus.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	description	Description. Shell small, conical, white or colorless, sometime with rests of light brown periostracum, yielding diversity in shell form, with 4 - 51 / 2 rounded whorls (usually 5), whorls increasing in radius, the first three whorls never uncoiled, subsequent whorls open coiled, body whorl always uncoiled, some specimens show a ' corkscrew' - like morphology (Figs 3, 6), suture deep; teleoconch sculptured with irregular, strong marked growth lines and with ribs (Figs 4, 5), spiny shells with whorls with a peripheral slightly pronounced carinae, ribs at the carina are modified into regularly spaced shovel-shaped spines (Figs 14, 24), transition protoconch / teleoconch distinct, marked by a change in surface texture from pitted to axial growth lines, whorls rapidly increasing in diameter, first two whorls smooth, without carina or spines, the last three whorls with increasing number spines (up to 40 on the body whorl, but usually less than 30), spiral lines beginning at the end of protoconch, a few specimens with smooth whorls without any sculpture but with thickened axial growth lines, some (smooth) specimens with a varix just behind the aperture (Fig. 13), body whorl large, apertures large, ovate to subrounded, often trumpet-like (Fig. 9). Protoconch with coarsely honeycomb-like pits, the basal and outer lip rounded and thin, some smooth specimens with trumpet-like peristome, umbiculus deep or, in corkscrew-like specimens, almost without umbiculus; Opercula not preserved. Shell measurements (mean + / - standard deviation in parentheses; n = 17): SH 2.08 (0.31) mm, SW 1.24 (0.17) mm, AH 0.79 (0.09) mm, AW 0.61 (0.08) mm, WN 4.93 (0.44) whorls; HBW 1.23 (0.21) mm. Paratypes from the type locality.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	description	Measurements of holotype. WN 51 / 4 whorls; SH 2.26 mm; SW 1.41 mm; AH 0.86 mm; AW 0.67 mm, HBW 1.46 mm.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
8C5214E5307B5B0A8FABF4BEC52E6504.taxon	distribution	Distribution. A microendemic species, only in spring " Tunel 7 ", near the town of Viesca.	en	Czaja 1, Alexander, Gladstone 2, Nicholas S., Becerra-Lopez 1, Jorge Luis, Estrada-Rodriguez 1, Jose Luis, SaenzMata 1, Jorge, Hernandez-Teran 3, Fernando (2021): A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141, DOI: http://dx.doi.org/10.3897/subtbiol.39.67799, URL: http://dx.doi.org/10.3897/subtbiol.39.67799
