It is a predatory insect, notable for its extremely long ovipositor. It uses this to deposit an egg into the tunnel bored by another species of wasp. It has a reddish-brown body approximately 2 inches (51 mm) long.
This strange insect was spotted my work colleague, Bruce McDonald, he gave me permission to use this photo. He grew up in the area and had never seen anything like this. He showed the photo to another colleague and they said he should show the insect to me! So I borrowed his memory card, edited and posted the photo.