Phyllosphingia is a monotypic moth genus in the family Sphingidae erected by Charles Swinhoe in 1897.

Its only species, Phyllosphingia dissimilis, the buff-leaf hawkmoth, was described by Otto Vasilievich Bremer in 1861.

It is known from the south-eastern Russian Far East, eastern and central China, Taiwan, the Korean Peninsula and Japan.

Subspecies P. d. perundulans is found from Nepal, east through north-eastern India, Myanmar and northern Thailand to southwestern China.

There is one generation per year in northern China, with adults on wing from May to July.