Endangered (proposed as a future Red Data Book species) and known from a solitary male taken in woodland at Newlands Corner, Surrey on 15 April 1961, with further specimens taken in Dorset in 2007 and Norfolk in 2011. In our area, a female was taken by day at Hilsea Lines, Portsmouth on 18 May 2013 (John Langmaid, Mark and Jenny Young). Wingspan 10-11 mm. Smaller than
P. obscurana and further distinguished by the dorsal blotch of ground colour on the forewing being situated slightly before the middle, the more obscure plumbeous striae and the obsolescent ocellus [Bradley]. Larva feeds within damaged bark of Hawthorn.