Callicera
Callicera is a Holarctic genus of hoverflies
Medium-sized to rather large bumblebee mimics.They are beautiful metallic flies, with strikingly long antennae.All the species are considered rare.Callicera larvae live in water rot-holes of overmature trees as saprophages.They occur mainly in ancient forests where they are arboreal.
Callicera have been used as bioindicatorsSpecies
