The black giant ichneumon wasp, Megarhyssa atrata, belongs to a genus of ichneumons called the giant ichneumons. The female’s body can be 1½ inches long, and her ovipositor 5 inches long. The larvae parasitize the larvae of wood-boring insects. Look for this species in deciduous forests.
Learn more about the black giant ichneumon wasp and other ichneumons in their group page.