At Median Farm (Cross Hands) yesterday there were many green island mines in evidence on fallen oak and beech leaves along the track. There were quite a few mines of Ectoedemia subbimmaculella on oak - this species only mines in October and November within these green islands. The larva makes a slit in the lower epidermis of the leaf (usually in a V shape) which distinguishes the mine from other similar species. There are only a few Carms records but it must be very under-recorded. Both the beech-feeding Stigmella species, S. tityrella and S. hemargyrella, were also present.
|Ectoedemia subbimmaculella on oak (left) and Stigmella tityrella on beech|