Bobbie
We are getting several of these insects in the Id pile right now....wish I would see one!
This is the giant ichneumon wasp female. The long tail is the ovipositor - used to lay eggs inside of a tree. The eggs are laid near a host larva of the horntail wasp that bores into wood.
The males do not have the long narrow tail. See the Insect ID page for photos of the males.
Read more: http://www.simplegiftsfarm.com/winged-borer-insect-with-long-antennalike-tail-ichneumon-wasp.html#ixzz0V76Kcgb1