Hoary Dagger Moth
Common NameHoary Dagger Moth
Scientific NameAcronicta pruinosa
FamilyNoctuidae
SubfamilyAcronictinae
Wingspan (mm)40
Wing Patterncryptic
Primary Colorswhite, grey, black
HabitatDeciduous forests, woodlands, suburban areas
Geographic RangeEastern North America (southeastern Canada and eastern United States)
Host Plantsoak, birch, maple, willow, cherry, elm, ash
Flight PeriodMay to August
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are hairy caterpillars, often with tufts, that feed on the leaves of various deciduous trees and shrubs. They pupate in a cocoon, often incorporating plant material, usually overwintering as a pupa.
Identification TipsKey identification features include the overall frosted or hoary appearance of the forewings, which are a mix of white, light grey, and black speckling. The typical 'dagger' markings characteristic of the genus Acronicta are often present but can be subtle or obscured by the extensive mottling in this species.
Description
A medium-sized moth with forewings heavily mottled in shades of white, grey, and black, creating a frosted or hoary appearance. The hindwings are typically paler and less patterned.
