This common moth is widespread, and the adults resemble several of the other coleophora species making accurate identification difficult unless found when present on the food plants.
It is on the wing during June and July.
The wingspan of the Pistol Case-bearer ranges between 12 and 15mm.
Coleophora anatipennella is common and widespread throughout the UK and Ireland although more common in the southern parts of Scotland than in the north.
The larvae of this moth form cases underneath the leaves of the food plants where they remain until the following year. Some may complete feeding in April and then pupate in May..
The larval foodplants of this moth are various thistles including the Spear Thistle and the Carline Thistle. Burdock leaves are also used.