213. * Folsomia diplophthalma (Axelson, 1902)

Isotoma diplophthalma Axelson, 1902: 106 .

Folsomia quadrioculata var. diplophthalma (Axelson): Linnaniemi 1907: 129.

Distribution in Vietnam. In forest, urban soil.

Northwest: Lào Cai ( Hoàng Liên national park; Sa Pa).

Northeast: Bắc Giang (Trýờng Sõn). Lạng Sõn (Hữu Lũng).

Red River Delta: Hà N ội (Cầu Gi ấy; Đông Anh; Đống Ða; Gia Lâm; Hai Bà Trýng; Hoàn Ki ếm; Sóc Sõn; Tây H ồ; Thanh Trì; Thanh Xuân; T ừ Liêm).

North Central Coast: Hà Tĩnh (Hýõng Sõn; Sõn Kim).

Authorship. RD: Nguyễn T.T. 1994, 2017; Stach 1965.

EC: Nguyễn T.T. et al. 1999.

CI: Nguyễn T.T. 1995c, 2003a; Nguyễn T.T. et al. 2011; Nguyễn T.T. & Nguyễn T.T.A. 2005; Phạm B.Q. et al. 2005.

CAT: Nguyễn T.T. & Vũ Q.M. 1993.

Type locality. Knyazhaya, Múrmansk Oblast, Kola Peninsula (Russia).

General distribution. After redescription of F. diplophthalma types (Potapov & Dunger 2000), this species is restricted to northern Palaearctic regions.

Remarks. Records from Central Europe, Japan, Nepal, Vietnam will need verification due to probable confusion with other congeners (Potapov 2001; Arbea 2016; Babenko et al. 2019).