How do you tell the difference between male and female copes Grey tree frog?

Male tree frogs at the bottom of both sides have sound in the oral capsule, can issue a loud noise。And the male's bodies are bigger than the female's.

Males are sometimes smaller but don't count on the size alone to figure out. Male frogs usually have black markings on their arms. They are also the vocal ones. If you should ever find two frogs...

yes a female tree bears locust and a male doesnt

the female has light colors and the male is dark

That depends entirely on the species.