Eucosma obumbratana (Lienig & Zeller, 1846)
49.2640 (B&F: 1202)
Eucosma expallidana sensu Pierce & Metcalfe, 1922 et auctt. nec (Haworth, 1811)
A resident species that usually occurs singly at mv light, occasionally sparingly, in a very few places mostly situated within a few miles of the coast. It is single-brooded, flying mainly from late June to mid August. The species has long been associated with sow-thistle species in Sussex. (Pratt, 2011).