I think these are my new favorite insect. This link is mostly lots of cool pictures of the orchid mantis, which is camouflaged to look just like an orchid flower. It even attracts pollinators, and then eats them! There is a lot of diversity in their coloration and appearance, too.
http://www.livescience.com/41604-animals-that-mimic-plants-photos.html
http://www.livescience.com/41604-animals-that-mimic-plants-photos.html