Rainieria antennaepes is a species of stilt-legged flies in the family Micropezidae found in North America east of the Rocky Mountains.

They frequently hold their white-tipped front legs up and wave them around in a manner that makes them appear like the antennae of ichneumonid wasps.

They feed on detritus, bird droppings, and similar waste.

[1][2][3][4] Rainieria antennaepes is the only member of its genus found in North America.

This article related to members of the muscomorph flies superfamily Nerioidea is a stub.