Roesel's Katydid nymph (Tettigoniidae: Tettigoniinae, Metrioptera roeselii) from Iowa. Members of this subfamily are also called 'shield-backed katydids' thanks to their unique pronota.
Large katydids (Tettigoniidae) were a common sight in Costa Rica. These robust herbivores don't take kindly to being handled and can deliver a surprisingly strong pinch with their powerful mandibles.
Raspy Cricket, Gryllacrididae, from Monteverde, Costa Rica. This chubby little fellow might look cute, but these omnivorous crickets are frequent predators of insects and other small arthropods.