Crickets are related to grasshoppers, but are more closely to katydids. They are distinguished by their flattened bodies and antennae that are about the length of their body. Crickets have long hind legs used for leaping, and a long pair of hair-like appendages at the tip of their abdomen (cerci). In addition, females have a long, needle-like organ for laying eggs (ovipositor) between the cerci. Adults have two pairs of wings.
Mostly nocturnal. Males make chirping mating calls by rubbing their wings together. Females lay eggs in the sand.
Crickets feed on vegetation and scavenge dead animals.
Widespread in all habitats, including deserts. Crickets live in damp places under rocks or plant debris.