Angustopila sp. 1

Material examined.

Laos • 1 shell; Luang Prabang Province, 3.1 km from centre of Nong Khiaw towards Pak Xeng, Tham Pha Toke, around the cave (locality code: 2019/114); 20°33.22'N, 102°37.72'E; 345 m a.s.l.; 5 Oct. 2019; A. Hunyadi leg.; coll. HA .

Measurements (in mm).

H = 0.91, D = 0.87, H/D*100 = 104.6, RUD = 29.5.

Differential diagnosis.

The single shell is similar in size, shape, and arrangement of the teeth to A. tweediei sp. nov., but differs in the ovate aperture, the weaker teeth and thinner peristome. More material is needed to examine whether these differences are constant and sufficient for species-level distinction.

Distribution.

Known from a single site only (Fig. 55).