Cossidae, the cossid millers or carpenter millers, make up a family of mostly large miller moths. Ths family contains over 110 genera with almost 700 known species, and many more species await description. Carpenter millers are nocturnal Lepidoptera found worldwide, except the Southeast Asian subfamily Ratardinae which is mostly active during the day.

Cossidae, the cossid millers or carpenter millers, make up a family of mostly large miller moths. Ths family contains over 110 genera with almost 700 known species, and many more species await description. Carpenter millers are nocturnal Lepidoptera found worldwide, except the Southeast Asian subfamily Ratardinae which is mostly active during the day.