Last Wednesday I found my first active case-bearing moth larva of the year and it was a new species for me, the appropriately named Willow case-bearer (Coleophora lusciniaepennella), feeding, as its name implies, on Willow (one of the Salix species). There are not a lot of local records for this moth but Rob Edmunds of the British Leafminers website explained that these larvae feed up and disappear (to pupate) very quickly, so it seems a case of blink and you miss them. I was just very lucky. You can see the rather non-descript adult moth on the UK Moths website and find more about its larval stage on the British Leafminers website.

My photos show the general location of the casebearer within the tree, what you see on the top side of the leaf, and views of either side of its cosy looking case.