Locust
Locusts are the swarming phase of certain species of short-horned grasshoppers in the family Acrididae. These are species that can breed rapidly under suitable conditions and subsequently become gregarious and migratory when their populations become dense enough. They form bands as nymphs and swarms as adults. Both the bands and the swarms are nomadic and rapidly strip fields and greatly damage crops. The adults are powerful fliers; they can travel great distances, consuming practically all green material wherever the swarm settles. Though the female and the male look alike, they can be distinguished by looking at the end of their abdomens. The male has a boat-shaped tip, while the female has two serrated valves that can be either apart or kept together. These valves aid in the digging of the hole in which an egg pod is deposited. Desert locusts can measure roughly 75 millimetres (3.0 in) in length.
In When Dinosaurs Roamed America
We only see it in one scene in the late Triassic segment. In the forest, a Coelophysis finds a large locust resting on a tree and attacks it. As the insect flies away, the Coelophysis quickly follows. The Coelophysis chases it throughout the forest until the locust temporarily rests and flies off again. The Coelophysis manages to catch it mid-flight and eat it.
A Coelophysis with a locust in it's mouth