Ectoedemia heringella

An adventive species that has recently arrived in Somerset, mining the leaves of Holm Oak Quercus ilex (and possibly other evergreen oaks), usually in considerable numbers with every leaf on the tree being tenanted by several larvae.  Unlike many leaf-miners, the species overwinters as a larva, continuing to feed throughout.  First found around Bath, it has expanded rapidly though unevenly across much of the county.  The foodplant, Holm Oak, is not native but was a popular planted tree in large Victorian gardens, parks and cemeteries, and these are ideal locations to look for the moth.  Towns such as Minehead, Clevedon and Burnham-on-Sea should be suitable places for the moth, and it ought to be recorded from there soon.