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Roesels Bush Cricket: spreading its wings

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Roesels Bush Cricket: spreading its wings

Roesel's Bush Cricket (Metrioptera roeselii) is new to Dorset being first recorded here in 2005. In his excellent book "The Grasshoppers, Bush-crickets and allies of Dorset" Bryan Edwards explains that this was once a species confined to the south east of England but in the 1990's it started to increase its range becoming common in the Thames Valley and then spreading further west and is now well established here in Dorset. It seems to like riverside vegetation and is present in some numbers along the Stour and Avon valleys. Although still mainly an east Dorset species it is still gradually pushing further west.

This is a brown bush-cricket but it does have a distinguishing feature that is readily visible. It has a bright yellowish-green border to the plates covering the thorax area. That said, they are not often seen as they quickly disappear into thick grass and undergrowth as soon as they detect the movement of a potential predator (and that would include us humans who would not wish to harm it!). Getting a photograph was a bit tricky and this slightly blurred one was the best I could do.

It is strange how populations of some species can suddenly expand like this after being stable for many years. It may be down to climate change, of course.


 

 

 

If you would like to see the complete series that this post is part of click here ---->
This nature note was written by ----> Peter Orchard
This nature nore was written ----> 2 years 4 months ago

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