Oospira Blanford, 1872

Dedov, Ivailo, Vu, Quang Manh, Le, Chi Toan, Tra, Van Tung & Szekeres, Miklos, 2025, The Clausiliidae (Gastropoda: Stylommatophora) of the Tam Dao National Park, Vietnam, Acta Zoologica Bulgarica 77 (1), pp. 41-48 : 42-43

Genus Oospira Blanford, 1872

Oospira Blanford 1872: 205

Type species: Clausilia philippiana Pfeiffer, 1847 , by original designation.

Oospira semipolita ( Bavay & Dautzenberg, 1899)

( Fig. 1C)

Clausilia semipolita Bavay & Dautzenberg, 1899: 288 , pl. 12, fig. 9

Type locality: Between Bac Kan and That Khe (Lang Son Province).

Locality data: Tam Dao N. P., rain forest, 800–900 m, leg. A. Napolov 1998.

Distribution: Hanoi Municipality and Bac Kan, Lang Son, Tuyen Quang and Vinh Phuc Provinces.

Habitat: Undisturbed forests.

Remark: This species is known only from a few localities in the eastern part of Northern Vietnam.

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. De- dov, 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).