Great Oak Beauty
Image: Ben Sale from Stevenage, UK (CC BY 2.0)
Common NameGreat Oak Beauty
Scientific NameBoarmia roboraria
FamilyGeometridae
SubfamilyEnnominae
Wingspan (mm)52.5
Wing Patterncryptic
Primary Colorsgrey, brown, white, black
HabitatOak woodlands, parks, gardens
Geographic RangeEurope, parts of Asia (Palaearctic region)
Host Plantsoak, birch, willow, poplar, lime, hazel
Flight PeriodJune to August
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are twig-mimics, feeding on the leaves of host trees. They overwinter as pupae in the soil or leaf litter.
Identification TipsDistinguished by its large size, broad wings, and a distinctive mottled grey-brown pattern with wavy lines and a clear discal spot on the forewings. Often rests with wings flattened against tree trunks.
Description
A large, robust moth with broad, mottled greyish-brown wings, often with darker wavy cross-lines and a prominent discal spot on the forewings.
