The Oak Bush Cricket, also Bush-cricket, is native to much of Europe including the UK and has been
introduced to North America.
It grows up to some 20mm long including the female's long ovipositor but excluding the antennae
which can be a further 40mm.
Male
Female
Nymph
Both adults are fully winged and the female, above centre, can be distinguished from the male, above left,
by her long ovipositor. The nymph (above right) doesn't have wings.
They live mainly in (oak) trees where eggs are laid under bark. Like other crickets, they have one generation per year.
Male
Female egg-laying - thanks to Martin Starnes for photo.
The Southern Oak Bush Cricket was native to southern Europe but has spread northwards with warming temperatures and became
established in the UK in the early 2000s. It has also spread from southern UK to the midlands in recent years. It grows up to some 15-17mm long.
It can be distinguished from the native Oak Bush Cricket as an adult since both male and female adults have
only small flaps instead of full wings. It looks a little similar to the unwinged nymph but has a different rump and stays unwinged to late summer.
It is arboreal and a predator of the Horse Chestnut Leaf Miner moth.