Wingspan 12.5 to 15 mm.  The cased larva feeds on the leaves of Thistle species thistle (Carduus or Cirsium).

Adult cased larva/mine

In areas where the larval foodplants are plentiful.

The adults fly in June and July.

The larva of this moth forms a case, approximately 11-12 mm long, beneath a thistle (Carduus or Cirsium) leaf, although burdock (Arctium) may sometimes be used. Feeding takes place July - September, and most larvae diapause full fed until pupation in May. Some larvae complete feeding in April. The shape of the ochreous case varies as, when being enlarged, it is elongated first, and the girth increased subsequently.

Found fairly frequently throughout England, Wales and southern Scotland. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as common.

It appears to be uncommon in Leicestershire and Rutland, where there are few records. L&R Moth Group status = D (rare or rarely recorded).

http://www.leafmines.co.uk/html/Lepidoptera/C.peribenanderi.htm

https://bladmineerders.nl/parasites/animalia/arthropoda/insecta/lepidoptera/ditrysia/gelechioidea/coleophoridae/coleophora/coleophora-peribenanderi/