Giant Ichneumon Wasp - Megarhyssa greenei
Order Hymenoptera - Ants, Bees, Wasps and Sawflies / Parasitica - Parasitic Apocrita
Superfamily Ichneumonoidea - Braconid and Ichneumon Wasps

Live adult male and female wasps photographed in the wild at Winfield, Illinois 
Male Ichneumon Wasp
Male Megarhyssa wasps gather at trees or fallen logs where female wasps are emerging in springtime. They seek to inseminate the females by either of two methods - waiting for them to emerge, or actually inserting their abdomens into the hole from which the female will shortly emerge. (Talk about robbing the cradle!)

Male Megharyssa wasp searchs with his antennae for emerging virgin females with which to mate.

Male Giant Ichneumon Wasp
Male lacks stinger or ovipositor

Giant Ichneumon Egg-Laying
Female Megarhyssa laying eggs, her ovipositor drilled into a fallen log.
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Order Hymenoptera: Bees, Wasps, & Ants
Hymenoptera (Latin for membrane wing) is a vast assemblage of insects second only to Coleoptera (beetles) in the number of described species. Hymenoptera number some 115,000 species - of which 18,000 live in North America. Hymenopterans inhabit a wide variety of habitats, and show an incredible diversity in size, behavior, structure and color.
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