Blastodacna is a genus of moths of the family Elachistidae.
Blastodacna species are found in the Holarctic, although most species are native to the Palearctic.
The genus is mostly placed in the family Elachistidae, but other authors list it as a member of the family Agonoxenidae or even assign it its own family, the Blastodacnidae.
Blastodacna is a genus of moths of the family Elachistidae.