Giant Ichneumon Wasp -
Megarhyssa macrurus
Hymenoptera family Ichneumonidae Live adult male and female wasps
photographed in the wild at Winfield, Illinois, USA.
Male Megharyssa wasp searchs with his antennae for emerging
virgin females with which to mate.
Male Megarhyssa wasps gather at trees or fallen logs where female wasps are
emerging in springtime. They seek to inseminate the females by 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!)
Competition is tight, and it is not uncommon for two males to have their
abdomens inserted into the same hole simultaneously.
Male lacks stinger or ovipositor
Female Megarhyssa laying eggs, her ovipositor drilled into a fallen log. Select
the picture for the complete photo-essay.