Hump-winged grigs are insects belonging to the genus Cyphoderris, in the family Prophalangopsidae, and superfamily Grylloidea (crickets). In modern times they are known only in northwestern North America and central Asia, but the fossil record indicates a wider distribution in the past.
There are three species in North America: Males call at night by sitting on a tree trunk with their head down and emitting a short, high-pitched trill. causing permanent but nonfatal damage to the male.