Local on downland, rough ground, dry pastures and in woodland clearings throughout much of England and Wales; rare in Ireland. In Hampshire widespread and common; on the Isle of Wight, first recorded at Cranmore in July 2001. Wingspan 11-13 mm. The most likely confusion species is
E. immaculatella, which differs in having a dark fuscous (ochreous in
E. atrella) labial palpus, but often reliably separated only by dissection of the genitalia. Larva feeds within stems of Perforate St John's-wort and Hairy St John's-wort, over-wintering in a case made from leaf fragments.