May Highflyer
Common NameMay Highflyer
Scientific NameHydriomena impluviata
FamilyGeometridae
SubfamilyLarentiinae
Wingspan (mm)31
Wing Patternstriped
Primary Colorsgrey, black, white
HabitatWoodlands, fens, riverbanks, areas with alder trees
Geographic RangeEurope, including British Isles, parts of Asia, and North America
Host PlantsAlnus glutinosa (Alder)
Flight PeriodMay to July
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesThe larvae feed on alder leaves, typically from June to August. They then pupate in a cocoon among leaf litter or in the soil, overwintering as pupae.
Identification TipsLook for its characteristic grey, banded forewings, often with a broad central band that can be darker or have a paler inner edge. Its strong association with alder trees is a key indicator.
Description
A medium-sized moth with mottled grey forewings featuring distinct darker bands and wavy lines, providing excellent camouflage against tree bark.
