Possibly a candidate for Cylloceria, especially if the tip of the ovipositor were somewhat bent upward (can't tell at this angle) and if the abdomen's almost entirely black (hidden by the wings). Otherwise, an apically-straight ovipositor and white-banded abdomen could instead suggest Coleocentrus flavipes. The fairly restricted white spot on the pterostigme would align well with the latter. … Jonathan Hoskins
Erving, MA