Coleophora glaucicolella
Coleophora glaucicolella is a moth of the family Coleophoridae, found in Asia, Europe and North America. It occurs in forest-steppe biotopes, wet meadows and meadow-steppe.
Description
The wingspan is 10–12 mm. Forewings pale and often yellowish or ochreous – tinged, usually with darker greyish streaks between veins towards costa. Only reliably identified by dissection and microscopic examination of the genitalia.Adults are on wing from June to August at sunrise, dusk and night.
The larvae feed on the seeds of rushes, including Juncus inflexus, compact rush, soft rush and saltmarsh rush, and supposedly also on woodrush. They create a trivalved, tubular silken case.