Purple Thorn
Common NamePurple Thorn
Scientific NameSelenia tetralunaria
FamilyGeometridae
SubfamilyEnnominae
Wingspan (mm)38
Primary Colorsbrown, reddish-brown, grey, white
HabitatWoodlands, forests, heathland, gardens
Geographic RangeEurope, North Africa, temperate Asia
Host Plantsbirch, alder, willow, hazel, oak, hawthorn, sallow
Flight PeriodApril to May (first generation), July to August (second generation)
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesThe larvae are remarkable twig mimics, blending seamlessly with their host plants. The species typically overwinters in the pupal stage.
Identification TipsKey identification features include the prominent 'thorn' on the hindwing, the jagged wing edges, and the mottled brown and grey coloration. The two generations can show slight variations in color intensity.
Description
A medium-sized moth characterized by its deeply scalloped wing margins, especially on the hindwings which feature a distinctive 'thorn'-like projection. Its wings display a mottled pattern of browns, reddish-browns, and pale greys, providing excellent camouflage.
