The genus Pseudophanias Raffray, 1890 is discovered in Japan and Taiwan Island for the first time, with three new species: P. yaimensis Inoue, Nomura & Yin, sp. nov., P. nakanoi Inoue, Nomura & Yin, sp. nov., and P. excavatus Inoue, Nomura & Yin, sp. nov. It is the fifth tmesiphorine genus known from Japan and the first from Taiwan. The genus Chandleriella Hlaváč, 2000 is placed as a junior synonym of Pseudophanias , resulting in the following new combinations: P. termitophilus (Bryant, 1915), comb. nov., and P. yunnanicus (Yin, 2019), comb. nov. A list of world species, and a key to East and South Asian representatives of Pseudophanias is provided.