Host plants:
The larva feeds on dead and living plant parts of all kinds.
Habitat:
Idaea laevigata inhabits dry and warm lowland habitats and also occurs in human settlements where it develops in gardens,compost piles and on other organic materials.
Life cycle:
Idaea laevigata has most often two generations between May and September.
Remarks:
Idaea laevigata occurs in N-Africa and parts of southern and central Europe. An occurrence in W-Asia is probable, but not yet confirmed.