Chilecomadia valdiviana is a moth of the family Cossidae.[1] It is found in Argentina and Chile (from Atacama to Aisén).
The wingspan is 48–60 mm.
The larvae feed on Nothofagus and Salix species and are considered a pest in Chilean eucalyptus plantations. They have been reported on Eucalyptus globulus globulus, Eucalyptus nitens, Eucalyptus camaldulensis, Eucalyptus delegatensis and Eucalyptus viminalis.