very rare and very local species in Belgium, not often recorded. It inhabits boggy places.
feeding habits of the larva are poorly known. Like its congeners, it feeds on various grasses. Pupates in a silken cocoon amongst moss.
adults fly from mid June towards early August, but most observations
are from late June and during July. They fly in the afternoon and
evening and later come to light.
resembles C. pascuella but differs in having a broader median
longitudinal streak which touches costa to half-way from base of wing
and a different shape of termen. It looks also much whiter than other
Crambus, especially in flight.
Limburg, Kinrooi, 23 June 2006.
(Photo © Chris Steeman)