A fairly common species in many places in Belgium. In orchards it is less common than formerly, because of the extensive use of insecticides. 

The larvae live gregariously in a silken web on Malus spp. Pupation in a dense white silken cocoon, neatly arranged together in the larval web.

The adults fly in July and August. They come to light.

ID: identification of imago of following species as cagnagella, malinellus and padella  are only with 100 % certainty done by reference to the genitalia. An aid to identify this species is the whitish forewing and the terminal cilia light grey or grey, but this is a guide! In many cases the best guide to separate these species is often the foodplant!