Thin-Lined Erastria
Common NameThin-Lined Erastria
Scientific NameErastria cruentaria
FamilyGeometridae
SubfamilySterrhinae
Wingspan (mm)21.5
Primary Colorspale brown, tan, reddish-brown, black
HabitatWoodlands, forests, areas with lichen-covered trees and rocks
Geographic RangeEurope, parts of Asia (e.g., Turkey, Caucasus)
Host Plantslichens, algae
Flight PeriodMay to September (often two broods)
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are cryptic, feeding on lichens and algae found on tree trunks and rocks, before pupating in a cocoon among debris.
Identification TipsKey features include the overall pale brown coloration, the two prominent black spots on the forewings, and the subtle reddish transverse lines; often found resting on lichen-covered substrates.
Description
A small, pale brown moth with two distinct black spots on each forewing and faint, thin reddish-brown transverse lines, providing excellent camouflage against lichen-covered surfaces.
