Cotana castaneorufa is a moth in the family Eupterotidae. It was described by Walter Rothschild in 1913.[1] It is found in New Guinea.[2]
The wingspan is about 49 mm. The forewings are chocolate liver brown with a tiny white dot at the base, an antemedian buff stigma followed by a buff transverse band which is distinct and broad at the costal half, growing narrower and indistinct on the inner half. There is a more or less indistinct postdiscal transverse greyish-olive outwardly curved chain of half moons. The hindwings are orange, the outer two-thirds almost completely suffused with liver brown. There is a brown transverse line in the basal one-third and an orange one somewhat sinuate in the outer one-third.[3]