Last modified: April 23, 2019, 12:44 p.m.
First observation in Belgium of this very rare species was in 1990 in LG.
Young larvae are found from July onwards and are fully grown in autumn. They hibernate in the case and pupate shortly after the winter.
They are on the wing from late April towards mid June.
The caterpillars feed on Ericaceae: Vaccinium vitis-idaea, Vaccinium myrtillus and Vaccinium uliginosum. Sometimes also on Andromeda polifolia, but this plant is very rare and local in Belgium.