Grasshopper Cricket and Locust (Orthoptera)
Orthopterans have a generally cylindrical body, with hind legs elongated for jumping. They have mandibulate mouthparts and large compound eyes, and may or may not have ocelli, depending on the species. The antennae have multiple joints, and are of variable length.
The use of sound is generally crucial in courtship, and most species have distinct songs.
These are in the Sub Order Ensifera
The family Tettigoniidae, are known in American English as katydids and in British English as bush-crickets. They are also known as long-horned grasshoppers, although they are more closely related to crickets than to grasshoppers.
Tettigoniids may be distinguished from grasshoppers by the length of their filamentous antennae, which may exceed their own body length, while grasshoppers' antennae are always relatively short and thickened. The males of tettigoniids have sound-producing organs (via stridulation) located on the hind angles of their front wings.
More information can be found on Wikipedia
This Sub order contains many species of Grasshopper, including Locusts. They are sometimes called short-horned Grasshoppers to differentuate them from Crickets. Families that swarm and change colour/behaviour during this time are called Locusts.
Eggs are normally laid in sand or soil and the eggs remain dormant until the temperature picks up. The young grasshoppers are small and identical to the adult except they lack wings. They go through several stages of development, getting larger each time and eventually become winged.