Fact file
Order: Orthoptera
Body length: 5 - 150mm
Species: World - 2500+, UK - 30
Orthoptera are divided into two sub-groups:
- the Ensifera: crickets, katydids and long-horned grasshoppers - which are mainly nocturnal and solitary
- the Caelifera: short-horned grasshoppers and locusts which are mainly active during the day