Locusts are actually just various species of grasshopper. When there's abundance after a period of hard times, some some grasshopper species transform into locu

Locusts are actually just various species of grasshopper. When there's abundance after a period of hard times, some some grasshopper species transform into locusts, turn from green into yellow, grow their wings and start swarming. The solitary and gregarious phase. When one locust becomes gregarious, he'll touch other locusts to turn them gregarious too.