Common in fens, damp meadows and marshes throughout much of the British Isles. In Hampshire almost certainly overlooked through confusion with other Juncus-feeding species, recorded from areas such the New Forest, Botley Wood and Pamber Forest; very few records from the Isle of Wight. Wingspan 9-12 mm. Like many of the Coleophora, imagines are virtually impossible to identify without recourse to dissection, and the larvae, which live in cases of characteristic form and which can sometimes be found on the foodplant, may be easier to identify by comparison against a reference collection. Larva feeds on seeds of Jointed Rush and Sharp-flowered Rush, living within a movable case.

Flightime guide
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