Last modified: Oct. 16, 2021, 12:21 p.m.
A very rare species in Belgium, only known from AN. This is the species recorded by E. Fologne as viciella in 1861 (see Fologne, Mors & Weyers 1861: 48).
Larvae can be found from early July till April next year.
Length 22–25 mm, width 6–8 mm. The case of the male is often covered with silken threads.
The male has a silken tube of ca. 5 mm at its rear end while the female does not construct such a silken tube.
The larva lives two years in its case. The male pupates low in the vegetation, the female in a conspicuous spot, e.g. high on a branch.
Males fly in the sunshine and live only for some days, the wingless females several weeks.
One generation a year: from late April till mid June with a peak around mid May.
Moorland, swamps, heathland.