Last modified: Dec. 14, 2025, 7:57 p.m.
A rather common species in Belgium.
Native
Sometimes the larva makes temporary cases by the young larva or for moulding.
Pupation in a subcylindrical cocoon in the nest.
The adults have been observed from mid-April till September, occasionally later.
The larva lives in birds nests, occasionally on woollen material in the open.