Vulnerable (proposed as a future Red Data Book species) on heathland, moorland, river-banks and mountains in parts of northern Scotland. Unlikely to be recorded in Hampshire or on the Isle of Wight. Wingspan 13-16 mm. A distinctive species, although the nominate form and f.
fasciana are reminiscent of
E. trigonella in wing pattern but are readily distinguished by their smaller size [Bradley]. Larva feeds on Rusty Willow, Eared Willow and Sallow, living within a spun or rolled leaf.