Culama glauca is a moth in the Cossidae family. It was described by Kallies and D.J. Hilton in 2012. It is found in Australia, where it has been recorded from Western Australia and New South Wales. The habitat consists of dry woodlands, mallee and heath. The wingspan is 37–48 millimetres (1.5–1.9 in) for males and 43–52 millimetres (1.7–2.0 in) for females. The ground colour of the forewings are light grey with black lines and strigulae. The hindwings are white to light grey. The larvae possibly feed on Eucalyptus populnea and Eucalyptus camaldulensis.