Parrhasius m-album, the white M hairstreak, is a species of butterfly of the family Lycaenidae. It is found in the United States from Connecticut west to southeast Iowa and Missouri south to east Texas the Gulf Coast and peninsular Florida. On rare occasions some stray to Michigan and Wisconsin. The wingspan is 32–41 mm. The larvae feed on Quercus virginiana and other Quercus species.

There is no data about harmful of this species. Don't forget to be careful.