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Leach, 1815

The Cossidae constitute a family of large size mostly moths with xylophagous larvae (they feed on wood). This family contains over 110 genera with nearly 700 known species, and many more awaiting description. The Cossidae are nocturnal moths all over the world, with the exception of South-East Asia where the Ratardinae subfamily is mainly active during the day. These moths are mostly gray in color and some have long, narrow wings which may make them resemble Sphingidae.
Caterpillars are smooth with little hair. * Most of the caterpillars of the Cossidae are Xylophagous tunneling inside trees, in some species they take up to three years to mature. Caterpillars pupate in their tunnels.

* Hampson, G. F. (1892). The Fauna of British India, Including Ceylon and Burma: Moths Volume I. Taylor and Francis - via Biodiversity Heritage Library.