Two new species of Amblypsilopus Bigot with a key to species from Taiwan (Diptera, Dolichopodidae)

The following two new species of the genus Amblypsilopus Bigot from Taiwan are described: Amblypsilopus flavellussp. n. and Amblypsilopus ventralissp. n. One species, Amblypsilopus crassatus Yang, 1997, is newly reported from Taiwan. A key to the species of the genus from Taiwan is given.