Nationally scarce (Na) in woodland and scrub in parts of south-eastern England. In Hampshire a rare moth with a very erratic distribution having been found on chalk downland at St Catherine's Hill in 2003 and Magdalen Hill Down in 2008, to the semi-ancient deciduous forest at Botley Wood (latest in 2023). Not recorded from the Isle of Wight to date. Wingspan 10-13 mm. Differs from
P. regiana in having the medio-dorsal blotch of the forewing pale yellow and subquadrate, its outer edge nearly straight to dorsum near the tornus, and the costal strigulae interspersed with thick wedges of pale yellow ground colour [Bradley]. Larva feeds within seeds of Field Maple, over-wintering as a pupa in a cocoon.