Whilst pruning my bonzais ready for spring I found 3 of these cases on oak. I've looked at MGBI, UK Moths etc (and Manley!) They don't seem to match C lutipennella or flavipennella and look nearest to ibipennella, albeit with a rather small pistol handle, which is not shown in Glamorgan in MapMate.
Any thoughts anyone? I will keep them anyway and see if I can get them through.