(Coleophora lassella)
Coleophora lassella is a moth of the family Coleophoridae. It is widespread in Europe including Belgium, the Canary Islands, Corsica, Crete, Cyprus, Denmark, Finland, France, Germany, Great Britain, Greece, Ireland, Italy, Latvia, Norway, Poland, Portugal, southern Russia, Sardinia, Sicily, Spain, Sweden and the Netherlands. The wingspan is 10–12 mm. There are possibly two generations per year in western Europe, with adults on wing from late May to June and again in mid-August. The larvae feed on Juncus bufonius. The case is made from a seed capsule and the larvae consume the contents of a capsule before attaching to another one to feed. The final case is 4–5 mm long.