small green beetle, nezara viridula mid instar nymph, walking on a leaf

beetle bug chemical crop crops damage defenses education entomology fauna feeder garden green herbivore insect instar leaf macro macrophotography malodorous metamorphosis mid moult natural nature nezara nymph outdoor outdoors park pentatomidae pest photography plague polyphagous scent science shield shieldbug small stink vegetable viridula wildlife zoology