Nemorimyza posticata

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

Description
nterocular space matte black. Lunule soft black. Antennae and palps black. Mésonotum brilliant black. Acrostichal bristles sparse and in 7-8 rows. Legs brownish black all the knees yellow. Haltere knob whitish yellow. Female: abdomen black, les the two last segments clear brown. Male: The base of the abdomen more or less dark, the rest yellow. Length: 2,5–3 mm.

Life cycle
The larva mines Solidago, Aster, Baccharis, and Erechtites.