locust and its predator - wallaces flying frog (rhacophorus nigropalmatus)

2000s 21st abah amphibian animal animals antenna black brown camouflage carnivore century climate color concept created danger date defocused distant flying focus food four frog golden grasshopper gray green group hidden hiding horizontal hunting image insect leaf locust mantella migratory no of orthoptera people rhacophorus river selective technique tropical waiting wallaces yellow