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 Cricket Camel crickets are medium sized nocturnal crickets that seem to prefer cool dark places. Katydids Fork-Tailed Bush Katydid These are large green insects that make a ton of noise on warm summer evenings.