This is late news but last August (21st) Robin trapped an unknown macro in his Merriott trap. Dr. Phil Sterling has just kindly confirmed that it is only the second British record of The Wedgeling Galgula partita
which is basically N. American but has colonised the Canaries, Madeira and Spain where it is now endemic.
There is a third record from S. Wales but the moth came out of a parcel sent from Kentucky!
I will try to get some photos from N. American sources, including the larva which is amazing!
Ihave obtained permission from two North American photographers to use their images. The first is a larva (I know we are unlikely to find these in Britain (yet!) courtesy of Yurika Alexander and the second is the pale form of the adult courtesy of Mark Dreiling (both members of the NOrth American Moth Photographers' Group at Mississippi State University.
Galgula partita larva ©Yurika Alexander
Galgula partita adult ©Mark Dreiling.