[Leonardo]

I don't know about pictures, but they're elaborately described in Xenocide (the third book in the Ender series). Suffice to say, they're not cute and cuddly.

The normal buggers, or drones, are child-sized (a little over a meter) black, slimy, shiny, carapaced insectoids. They have jet-black eyes like bees, and are bipodular. Their hands have only a thumb and a single finger, which they use like a pincer. A friend of mine is offering to draw a bugger as I am writing this. I guess I'll take him up on that, and post the result here. Check back in a few days, haha.