Adult Ophion sp., a solitary, internal, larval-pupal parasitic (parasitoid) wasp of salt marsh caterpillar, Estigmene acrea.

Adult <i>Ophion</i> sp., a solitary, internal, larval-pupal parasitic (parasitoid) wasp of salt marsh caterpillar.; El Toro, California Credit: Earl R. Oatman
Credit: Earl R. Oatman