The small number of specimens available suggest a species almost as variable as G. variabilis . Wing expanse 13-16 mm.
Body pale ochreous to near white.
Hindwings uniformly gray. Pollex on valva replaced by a pectinifer. Different color forms are often very similar to G. variabilis , but are readily told apart by the genitalia. The male is unique among Greya in having the prominent pectinifer, and the female differs from both G. variabilis and G. kononenkoi in having two prominent signa. Host, oviposition, and larval feeding habits Unknown, but individuals often kicked up from areas with Saxifraga spp.