Oospira vanbuensis

Oospira vanbuensis (Bavay & Dautzenberg, 1899) (Fig. 1D) Clausilia vanbuensis Bavay & Dautzenberg, 1899: 38, pl. 2, fig. 1 Type locality: Between Son La and Van Bu (present Ta Bu, Son La Province). Locality data: Tam Dao N. P. (Hoang et al. 2012); Tam Dao N. P., rain forest, 800–900 m, leg. A. Napolov 1998; Tam Dao resort, yard of the hotel Quang Minh (21.4580°N 105.6449°E), 970 m, leg. R. Bekchiev, I. Dedov, M. Langurov & N. Simov 2023 (Fig. 2D). Distribution: Hanoi Municipality and Ha Giang, Tuyen Quang, Vinh Phuc, Son La, Thanh Hoa, Ninh Binh and Nghe An Provinces. Habitat: Various types of forest and anthropogenic environments. Remark: All the known occurrence records of this species are from Vietnam but its distribution range may extend to neighbouring areas of Yunnan Province (China) and Houaphanh Province (Laos).