The specific name cuongi is in honor of the biologist Duong Ngoc Cuong, who works at the Institute of Ecology and Biological Resources in Hanoi, Vietnam, and who is a friend of the first author.

[1] This species occurs in: The type locality is Pu Luong Nature Reserve, a limestone hill near the native village Am, 20°27.39'N 105°13.65'E, in Thanh Hóa Province, Vietnam.

Aperture is obliquely pear-shaped to narrowed elliptical, with a sinulus bordered by the lamella parietalis and a knob on the peristome, whitish inside.

Clausilial blade is rather broad, curvature of its outer border dictated by the position of the short palatal plicae.

Penis is tripartite as far as can be judged on the basis of the transparent genital slides, forming a loop with a sharp curvature about halfway.

Proximal half formed by (1) a short segment with a relatively simple luminal surface, followed by (2) a clearly broader and about three times longer part with some longitudinal ridges with zigzag borders.

Vas deferens, a short part of the penis and nearly as much as the proximal half of the vagina united by a common sheath.