This tiny Adelius sp. emerged on 23/5/2010 from a Cowberry leaf that had been mined by an Ectoedmia weaveri larva. The Cowberry was found on Barden Moor VC64, on the east bank of Lower Barden Reservoir.
The Adeliinae are part of the Braconidae and are specialist parasitoids of Nepticulids.
Mark Shaw tells me that this is a very unrevised group - probably a great many, more or less specialised species, with only a few names in use and perhaps none of them reliably.