Very small Katydid nymph, body less than 10mm in length. Beautiful lime green colour, translucent body parts, and body/legs very slender. Long, fine antennae. A fresh new baby from all appearances. When it hopped, it was lightning fast! Katydids are Tettigoniids and may be distinguished from grasshoppers by the length of their filamentous antennae, which may exceed their own body length, while grasshoppers' antennae are always relatively short and thickened.
This little one jumped from the tree onto my shirt, and finally onto the back of my middle finger. I took a photo, and when I was done I placed it back into the tree.