Temporal range: Permian to Recent Permian–Recent
|Pycnophlebia speciosa, a Jurassic species|
Grigs are insects belonging to the orthopteran family Prophalangopsidae (formerly known in some classifications as Haglidae). There is only one extant genus in North America, several lesser known genera in Asia, and at least 12 fossil genera.
The closest living relatives to the Prophalangopsidae are the family Tettigoniidae (katydids or bush-crickets), but the evolutionary split occurred more than 230 million years ago in the Permian.
The female of the species consumes the wings of the male during mating.
- "Family Prophalangopsidae hump-winged grigs". Retrieved 31 Dec 2014.
- "Family Prophalangopsidae (hump-winged grigs) in North America north of Mexico". Retrieved 31 Dec 2014.
- "The First Time". National Geographic. 227 (1): 20. January 2015.
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