''Prays alpha'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of ...

of the family

Plutellidae The Plutellidae are a family of moths commonly known as the diamondback moths, named after the diamondback moth (''Plutella xylostella'') of European origin. It was once considered to have three subfamilies: Plutellinae, Praydinae, and Scythrop ...

. It is found in Japan (including

Hokkaido is Japan, Japan's Japanese archipelago, second largest island and comprises the largest and northernmost Prefectures of Japan, prefecture, making up its own List of regions of Japan, region. The Tsugaru Strait separates Hokkaidō from Honshu; th ...

island) and has also been recorded from China. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan ...

is 11–16 mm.Japanese moths
/ref>

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. Plutellidae Moths of Japan Moths described in 1977 {{Yponomeutoidea-stub