Thanks for the feedback. Both the bee and the butterfly were moving from flower to flower quite quickly. I was happy just to get a few in focus! The background on the butterfly is half light and half dark; I wish it was one or the other. I can't remember how much (if any) I cropped out of the bee shot. I'll look again when I get home. The praying mantis was the only one that posed perfectly still for his picture.
Does anyone know why the mantis picture looks pixelated on the right side? It looks fine in the photo gallery.