Crickets, Grasshoppers, and Katydids
These insects belong to the order Othoptera. They have long rear legs. They rub their wings/legs together to make loud sounds.
Crickets
Camel crickets are medium sized nocturnal crickets that seem to prefer cool dark places.
These are chunky dark crickets with the classic cricket chirp.
Grasshoppers
These are large brilliant green grasshoppers that are often seen in the garden.
Katydids
These are large green insects that make a ton of noise on warm summer evenings.