Pterapherapteryx is a monotypic moth genus in the family Geometridae erected by John Curtis in 1825.

Its only species, Pterapherapteryx sexalata, the small seraphim, was first described by Anders Jahan Retzius in 1783.

It is found in central and northern Europe and south-east Russia.

It has three whitish lines or stripes along the dorsum, and in some examples there is a white line low down along the sides; the head, which inclines to yellowish, is notched, and there are two pinkish points on the last ring of the body.

The moth is on wing from May to August, depending on the location.