The Wing Atlas
August Thorn

August Thorn

Common NameAugust Thorn
Scientific NameEnnomos quercinaria
FamilyGeometridae
SubfamilyEnnominae
Wingspan (mm)42
Wing Patternstriped
Primary Colorsyellow, orange
HabitatWoodlands, parks, gardens
Geographic RangeEurope, parts of Asia
Host Plantsoak, birch, beech, elm, lime
Flight PeriodJuly to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesThe larvae are twig-like, camouflaged to resemble twigs of their host plants. They pupate in a loose cocoon, often spun among leaves or bark, emerging as adults in late summer.
Identification TipsDistinguished by its bright yellow-orange coloration, the two wavy brown cross-lines on the forewings, and the deeply scalloped wing margins. It is often found resting on tree trunks or foliage during the day.

Description

A medium-sized moth with bright yellow to orange-yellow wings, marked with two distinct wavy brown cross-lines and a prominent discal spot on the forewings. The wing margins are noticeably scalloped.

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