Faculty of Biological Sciences; Jurez University of the State of Durango; 35010 Gmez Palacio; Durango; Mexico.
Zootaxa. 2024 Feb 8;5406(4):551-564. doi: 10.11646/zootaxa.5406.4.4.
We describe two new species and a new record of stygobitic gastropods from small groundwater-fed springs in Candela, Coahuila, northern Mexico. Phreatomascogos garciasaucedoi n. sp. is described based on shell morphology and is the second species of this formerly monotypic genus. According to the current classification, we have transferred this genus to Cochliopidea. Phreatodrobia candelensis n. sp. is described, and represents the first record of the genus in Mexico extending its known range more than one hundred kilometers to the south. Also found with the new stygosnails was Coahuilix hubbsi Taylor, 1966, which was previously known only as an endemic species from the neighboring Cuatro Cinegas valley. The reported new subterranean snails are restricted in their distributions to two small water sources only a few meters long which flow directly into a touristic zone with swimming pools and other recreation areas. Using NatureServe Ranking, both new species were assigned as critically imperiled. The very limited distribution and negative anthropogenic impacts within the sites should draw special conservation attention for the reported stygobionts.
我们描述了来自墨西哥北部科阿韦拉州坎德拉（Candela）的小型地下水泉中的两种新的穴居腹足动物物种和一个新记录。Phreatomascogos garciasaucedoi n. sp. 是根据壳形态描述的，是这个曾经单型属的第二个物种。根据当前的分类，我们将这个属转移到 Cochliopidea。Phreatodrobia candelensis n. sp. 被描述，代表了该属在墨西哥的首次记录，将其已知范围向南延伸了一百多公里。与新的穴居蜗牛一起发现的还有 Coahuilix hubbsi Taylor, 1966，它以前仅作为邻近的 Cuatro Cinegas 山谷的特有种而被知晓。报道的新的地下蜗牛的分布仅限于仅几米长的两个小型水源，这些水源直接流入有游泳池和其他娱乐区的旅游区。根据自然保护联盟的排名，这两个新物种都被列为极度濒危物种。在这些地点内，非常有限的分布和负面的人为影响应该引起对报道的穴居生物的特别保护关注。
