Scarce Marsh Pearl
Common NameScarce Marsh Pearl
Scientific NameChrysocrambus linetella
FamilyCrambidae
SubfamilyCrambinae
Wingspan (mm)23
Primary Colorsbeige, light brown, dark brown
HabitatMarshes, fens, damp meadows, wet heathland
Geographic RangeEurope, extending eastwards into parts of Asia
Host PlantsMolinia caerulea, various grasses
Flight PeriodJune to August
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae feed on the roots and lower stems of grasses, particularly Purple Moor-grass (*Molinia caerulea*). They overwinter as larvae and pupate in a silken cocoon near the ground in spring.
Identification TipsLook for its pale, speckled forewings with faint, wavy transverse lines and a distinct dark subterminal line. Its preference for damp, marshy habitats is also a key indicator. The common name reflects its localized and often scarce distribution.
Description
A small moth with pale ochreous to yellowish-brown forewings densely speckled with dark scales. It features two indistinct, wavy dark transverse lines and a prominent dark subterminal line, giving it a mottled appearance.
