The Cooloola monster (Cooloola propator Rentz 1980) is a large burrowing Orthopteran of the family Cooloolidae. Four species are known from this family, all being endemic to Queensland, Australia. The name originated from the discovery of C.propator, the earliest known species, in the Cooloola National Park in 1980.

Little is known about their life histories, as they lead an almost entirely subteranean existence, but it is believe that they are predaceous towards other soil-dwelling invertebrates.

The Cooloolidae in unusual in the Primitive Superfamily Gryllacridoidea in that members' antennae are considerably shorter than their body-length.