Hypomecis externaria
Common NameHypomecis externaria
Scientific NameHypomecis externaria
FamilyGeometridae
SubfamilyEnnominae
Wingspan (mm)57.5
Wing Patterncryptic
Primary Colorsbrown, grey, cream
HabitatBroadleaf and mixed forests, woodlands
Geographic RangeEast Asia (China, Korea, Japan, Russian Far East)
Host PlantsQuercus, Betula, Salix, Ulmus, Prunus
Flight PeriodJune to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesUndergoes complete metamorphosis; larvae are typical geometrid 'inchworms' or 'loopers' that feed on various broadleaf trees and shrubs, pupating in the soil or leaf litter.
Identification TipsDistinguished by its large size for a geometrid, the complex cryptic pattern of mottled browns and greys across all wings, and the prominent feathery antennae, especially in males.
Description
A medium-to-large moth with broad, mottled wings in shades of brown, grey, and cream, featuring intricate cryptic patterns and prominent bipectinate antennae.
