yuppie, a katydid piece, for sure! at a fast glance, it looked like a grasshopper because of hindhoppers but grasshoppers can be distinguished by their much shorter antennae and are often more colorful than katydid nymphs are.

grasshopper's short antennae

katydid's long ones

yours are waay long, so it's part of arde-katydid family. did you see it hopped? or at all? I know, one hind leg but nature do amaze us too!