Name in source. Folsomides sp. in Deharveng et al. (1989). Source: Deharveng et al. (1989), Bedos (1994). Distribution in Thailand. Widespread. Habitat: at 1700–2000 m. in Doi Inthanon forest Distribution outside Thailand. Cosmopolitan.
Remark. F. americanus was put in synonymy with F. parvulus by Fjellberg (1993). The two forms in our material were usually not mixed, and are therefore considered as good species.