common species in Belgium.
larva lives in birds' nests, occasionally on dead animals or woollen
material in the open. Sometimes the larva makes temporary cases by the
young larva or for moulding. Pupation in a subcylindrical cocoon in the
adults have been observed from late May till early September.
Namen, Villers-sur-Lesse, 13 June 2010.
(Photo © Jean-Yves Baugnée)