Xylorycta flavicosta

Xylorycta flavicosta is a moth in the Xyloryctidae family. It was described by Lucas in 1894. It is found in Australia, where it has been recorded from Queensland.

The wingspan is 28-38 mm. The forewings are rich slaty-grey, becoming ashy-grey toward the basal portion of the costa. There is an orange-red costal band, more brown-red in females and with a rich black velvety patch in the apical angle. The hindwings are fuscous-grey.

The larvae feed on Eucalyptus eugenioides and Eucalyptus gummifera.