70.252 Biston betularia (Peppered Moth) 1931
fw: 22-28mm; May-Aug; a wide variety of plants; common in England, Wales and lowland Scotland
ID: typically white with black peppering, Form carbonaria is sooty black apart from a white spot at the forewing base. Form insularia is intermediate between and the result of cross-breeding between the typical form and form carbonaria.
Page published 05/04/2014 (§1-3)