I would appreciate help in identifying this blue beetle that I saw today as I have never seen anything like it before. It is about 5mm in length and, whilst the attached image is not in focus, it does show the features of the beetle and the light-blue colour is reasonably accurate.
I searched the area for some time and it was the only beetle of its kind and colour that I could find. It was walking along the leaves of reed and grass that were growing within 2m of one of the main lakes at Stanwick Lakes in Northamptonshire. It did not appear to be eating.
This looks like one of the Phyllobius weevils to me. Although they are usually green, some do tend towards blue, pomaceus and argentatus are often like this. I have seen some bright turquoise ones but this must be about as blue as they get!
The beetle in the image does appear to have similar characteristics to Phyllobius, sometimes referred to as the 'nettle weevil'. If the information at the linkes below is right, the lighting can often make the beetle look blue in colour.
Here are some links that may help you decide if this is the right identity for this beautiful beetle:
Hope it helps you!
Hi, I've followed this as I have found several similar weevils but they are green, are they the same species just a different colour? or a different species altogether?
Is this being classed as an invasive alien species? I looked on the NBN but there are few records submitted. The photos are from a garden outside Reading (UK) although I did let it go so I'm afraid I can't find out any more. Does it only feed on Cupressaceae? only there's none in mine or the gardens either side and I want to see if I can find any more.
It shouldn't be classified as an invasiove because a) it's European and b) it's host plants are invasives/ ornamentals so its potential to do any environmental harm is minimal. It doesn't seem to harm the trees much anyhow.
I (casually) beat some leyland cypresses today that had been covered in it a month ago, and found none; perhaps it is now over. It should be common around Reading, if you go out and beat you may get a few still