Waved-lined Geometrid
Common NameWaved-lined Geometrid
Scientific NameCostaconvexa polygrammata
FamilyGeometridae
SubfamilyLarentiinae
Wingspan (mm)22.5
Primary Colorsbrown, dark brown, grey
HabitatMeadows, grasslands, fens, marshes, open woodlands, often near water
Geographic RangeEurope, parts of Asia
Host PlantsGalium (bedstraws)
Flight PeriodMay to June, and July to September (bivoltine)
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are 'loopers' or 'inchworms' that feed on bedstraws. The species typically overwinters as a pupa, with two generations per year in many areas.
Identification TipsKey features include the prominent dark, wavy transverse lines, especially the broad median band on the forewings, against a mottled brown and grey background. Its small size and typical geometrid resting posture are also helpful.
Description
This small moth has a mottled brown and greyish-white appearance with distinct dark, wavy transverse lines across its wings, giving it a cryptic pattern. When at rest, its wings are held flat, forming a triangular shape.
