Prays delta is a moth of the family Plutellidae. It is found on the island of Honshu in Japan and has also been recorded from China.
The wingspan is 12–13 mm.Japanese moths
References
, 2011, A taxonomic review of Prays Hübner, 1825 (Lepidoptera: Yponomeutoidea: Praydidae) China with descriptions of two new species. Tijdschrift voor Entomologie 154 (1): 25-32.