Grey Dagger
Common NameGrey Dagger
Scientific NameAcronicta psi
FamilyNoctuidae
SubfamilyAcronictinae
Wingspan (mm)39.5
Wing Patterncryptic
Primary Colorsgrey, brown, black, white
HabitatWoodlands, gardens, hedgerows, parks, urban areas
Geographic RangeEurope, North Africa, temperate Asia
Host Plantsoak, birch, willow, elm, hawthorn, fruit trees
Flight PeriodMay to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesEggs are laid on host plants. Larvae are distinctive, hairy, black with a yellow dorsal stripe and red spots, and a prominent hump on segment 5. They pupate in a cocoon under bark or in soil.
Identification TipsKey features include the prominent black 'dagger' mark on the forewings, particularly the one pointing towards the tornus. Distinguish from the similar Dark Dagger (*Acronicta megacephala*) by the more pointed and distinct shape of the dagger mark and the caterpillar's appearance.
Description
A medium-sized moth with mottled grey and brown forewings, featuring prominent black 'dagger' markings that provide excellent camouflage against tree bark.
