A well-camouflaged katydid nymph feeds on a bush in Panama. Every night at the field station, the bushes outside the field station exploded with life. This bush in particular seemed to spontaneously generate half a dozen katydids every night like clockwork. They were most likely there during the day, of course, but were nearly impossible to find thanks to their outstanding camouflage. It was only at night, when they actively foraged, when they were easy to spot.
Most of the crickets I run across are rather drably colored - not this one from Panama, though.
Conehead katydid (Conocephalinae: Subria sp.) from Panama.