2008). A remarkable new species of Rimularia Nyl. (lichenized fungi: Trapeliaceae) from tropical Australia. Austrobaileya 7(4): 659–663. The new species Rimularia cerebriformis Kantvilas is described, based on a collection and field observations from dry eucalypt woodland in the Northern Territory, Australia. It represents an unusual occurrence of a genus that occurs mostly in moist environments in cool to cold, temperate latitudes of both hemispheres. Relationships with other species of the genus are discussed briefly.