Aphelinus abdominalis
the antennae. She turns herself around, curls up the wing tips, and will try to pierce the aphid in the abdomen with her long ovipositor. The ovipositor [...] hardens to become a leathery, black mummy. The adult wasp appears through an irregularly serrated hole at the posterior end of the mummy, on which the aphid’s [...] for host feeding while the larger individuals are parasitized. The control of the aphids is due to host feeding and parasitization in roughly equal measure