Tetrigidae is an ancient family in the order Orthoptera. Species within the Tetrigidae are variously called groundhoppers, pygmy grasshoppers, pygmy devils, pygmy locust or (mostly historical) “grouse locusts”.
Tetrigidae are typically less than 20 mm in length and are recognizable by a long pronotum. This pronotum extends over the length of the abdomen, sometimes to the tip of the wings, and ends in a point. In other Orthoptera, the pronotum is short and covers neither the abdomen nor the wings. Tetrigidae are generally cryptic in coloration, some species have enlarged pronota that mimic leaves, stones or twigs.