Question: where do ichneumon wasp come from?
Answer: giant_ichneumon_b_2012. jpg. The long-tailed giant ichneumon wasp, Megarhyssa macrurus, belongs to a genus called the giant ichneumons. Using her 4-inch-long ovipositor, the female of this species drills through decaying wood to deposit eggs onto a larval pigeon tremex, a type of horntail wasp.