Description of a New Species of Sulcospira (Gastropoda: Pachychilidae) From Guangxi, China Based on Morphology and Molecular Evidence

A new species of pachychilid freshwater gastropod, Sulcospira elonga sp. nov., is described from Guangxi Zhuang Autonomous Region, China, based on morphological and molecular evidence. The new species is distinguished from its congeners by a combination of characters, including eight to 11 whorls, spiral lirae and axial ribs present, the shell width is about 1.4-1.6 times the maximum width except for the body whorl, and stomach with outer and inner crescentic pads connected to each other.