Norfolk status known as 'bagworms' because of the larval habit of constructing a case, or bag, in which to live.
females are completely wingless, resembling small yellow grubs.
The larval cases, made from fragments of sand, lichen and bark, bound together with silk, can be found attached to rocks, old walls, and quite often to a tree trunk or fence. Smooth barked trees such as Beech are particularly favoured, especially where there is limited ground-cover.
All cases found during the Winter months are from the previous year, active larvae remaining on the ground until the Spring.
Recorded in 13 (19%) of 69 10k Squares. First Recorded in 1874. Last Recorded in 2015.