Hi Clive.... think I'm suffering from Seed Bug confusion!! I thought previous posts had discussed the Western Conifer Seed Bug (Leptoglossus occidentalis) as being a recent immigrant. Is it a similar situation with Leptoglossus corculus (which seems to be referred to as the Leaf-footed Pine Seed Bug)? If these are indeed two UK species, my next question is how do we tell the them apart.....
Though you would have better success if you Googled Western Conifer Seed bug, Leptoglossus occidentalis . This North American species found its way to Europe through imported plant stock and has become well established. In the last two years there have been increasing records in the UK, mostly near to the south coast, but many inland records as well. To date I am not aware that any nymphs (immature) have been found in the UK and it appears as if all the UK records so far have been of adults that have flown in from mainland Europe. That said it is likely to become an established species in the UK soon.
It is considered a pest of conifers - but its a super bug. It's a coreid by the way (Hemiptera: Coreidae).
Hi Clive - to my knowledge Leptoglossus corculus has not been recorded in the UK. It certainly hasn't made it to the checklist yet whereas L. occidentalis has, so just the one species.