[1] The holotype of the species was collected in Delley's Dell in the Grampians National Park.

The specific epithet is a patronym in honor of Dr. Mike Gray, who first collected the holotype for this species.

[2] The species is only known to inhabit wet eucalypt forest in Grampians National Park.

[2] The species is a short-range endemic taxon whose range is restricted to the Grampians National Park.

A search of the type locality in 2010 after a fire failed to find any specimens.