Atrimitra idae, common name Ida's miter, is a species of medium-sized sea snail, a marine gastropod mollusk in the family Mitridae, the miters.

The body of the animal is all pure white other than its black eye spots.

This miter lays egg capsules attached to rock surfaces.

Veliger larvae hatch from the capsule after ~24 days, depending on temperature.

[2] The species is a specialized carnivore, and can live for weeks without food.