Hey Bushman,
I actually own a south American bow and arrow made by the Chumani indians of northern Bolivia. I wrote an article about it in PA and it should be coming out in the next few months....Keep an eye out for it. It has some close-up photos of different parts of the bow and the arrow. A guy gave it to me this past summer when I was doing a flintknapping demo at a hunting show down in macon, GA