Nemorimyza posticata is a species of fly in the family Agromyzidae.

Female: abdomen black, les the two last segments clear brown.

Male: The base of the abdomen more or less dark, the rest yellow.

[8] The larva mines Solidago, Aster, Baccharis, and Erechtites.

[9] This article related to members of the muscomorph flies superfamily Opomyzoidea is a stub.