Catocala; Print; Catocala is a generally Holarctic genus of moths in the family Erebidae. The genus was erected by Carl Linnaeus in his 1767 12th edition of Systema Naturae. The moths are commonly known as underwing moths or simply underwings. These terms are sometimes used for a few related moths; but usually - especially when used in plural; not as part of a species name - they are used to refer to Catocala only.