 Some species have enlarged pronota that mimic leaves, stones or twigs.Other characteristics pygmy grasshoppers exhibit in comparison to other Orthoptera families are lack of arolium between the clows, first thoracic sternite modified into collar-like structure called sternomentum, tarsal formula 2-2-3, scaly fore wings, and developed hind wings.In temperate regions, Tetrigidae are generally found along streams and ponds, where they feed on algae and diatoms.