Blastodacna curvilineella is a moth in the family Elachistidae. It was described by Vactor Tousey Chambers in 1872.[1] It is found in North America, where it has been recorded from Kentucky, Maine, Ontario and Quebec.[2]
The wings are dusky grey, sprinkled with hoary (white or grey) and there is a hoary spot on each side of the thorax above the wings. There are two or three indistinct, dusky longitudinal short streaks on the wings.[3] Adults are on wing from May to July.
The larvae have been recorded feeding on Crataegus species.