Cute little spittlebug (Clastopteridae: probably Clastoptera funesta) from Monterverde, Costa Rica. It's difficult to see from his angle, but this species has a very convincing "false face" on its backside to fool predators into attacking less vital areas of its body.
A pair of colorful spittlebugs (Cercopoidea) from Monteverde, Costa Rica.
Buffalo treehopper (Membracidae: Ceresa sp.) from Iowa.