An Ichneumon wasp lays it's eggs in a tree in Lewiston. The long tail of this largest of the Ichneumons is an ovipositor for laying eggs. It is used to penetrate through wood and lay an egg in the developing larva of a horntail, a primitive wasp whose larva feeds in tunnels inside the wood. The Ichneumon can sense the vibrations of the feeding horntail larvae with its antennae to find its prey. The egg develops in the larva, not killing it until it is full grown. The wasp pupates in the horntail tunnel, and, when an adult, chews its way out through the bark.