Oak Bush Cricket Meconema thalassinum

Oak Bush Cricket
Oak Bush-cricket
The Oak Bush Cricket, also Bush-cricket, is native to much of Europe including the UK and has been introduced to North America.
Oak Bush Cricket
Oak Bush Cricket
Oak Bush Cricket
It grows up to some 20mm long including the female's long ovipositor but excluding the antennae which can be a further 40mm.
Oak Bush Cricket Male
Oak Bush Cricket Female
Oak Bush Cricket 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.
Oak Bush Cricket
Oak Bush Cricket
Oak Bush Cricket
They live mainly in (oak) trees where eggs are laid under bark. Like other crickets, they have one generation per year.
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Southern Oak Bush Cricket Meconema meridionale

Southern Oak Bush Cricket
Southern Oak Bush Cricket Male
Southern Oak Bush Cricket egg-laying 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.
Oak Bush Cricket
Oak Bush Cricket
Oak Bush Cricket
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.