Notes:
Nationally scarce (Nb) in woodland and scrubland throughout much of England. In Hampshire and on the Isle of Wight distinctly uncommon, with just a handful of records in recent years. Wingspan 10-12 mm. Differs from P. populana by the white triangular medio-dorsal blotch of the forewing [Bradley], but given the species rarity, identification should be confirmed by dissection of the genitalia. Larva feeds on Hawthorn and Blackthorn, living between flowers and leaves spun together with silk.