Apart from the type specimen, which came from Violet Valley in the east Kimberley, all records are from the high rainfall, near-coastal north-west Kimberley of Western Australia (Burbidge and Webb 2008). It has not been recorded in east Kimberley since 1917 and is thought to be extinct from here. It is also found on Bigge and Boongaree Islands (A. Burbidge pers. comm.).