Ermine Knot-horn
Common NameErmine Knot-horn
Scientific NameEuzophera pinguis
FamilyPyralidae
SubfamilyPhycitinae
Wingspan (mm)24
Primary Colorsgrey, white, black
HabitatWoodlands, parks, gardens, and hedgerows where ash trees are present
Geographic RangeEurope, North Africa, parts of Asia
Host PlantsFraxinus excelsior, Fraxinus spp. (Ash trees)
Flight PeriodJuly to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae bore into the bark of ash trees, feeding on the inner bark and sapwood. They overwinter as larvae and pupate in the spring, often within a cocoon under the bark or in the soil.
Identification TipsLook for the distinctive mottled grey and white forewings with prominent black spots, especially a larger one near the center. Its cryptic coloration helps it blend seamlessly with tree bark.
Description
A slender moth with mottled grey, white, and black forewings, featuring several distinct black spots. It rests with its wings folded tightly along its body, giving it a 'knotty' appearance.
