Croitana arenaria, the inland sand-skipper, is a butterfly of the Hesperiidae family. It is endemic to Australia in the Northern Territory and South Australia. The wingspan is about 20 mm. The larvae feed on Enteropogon acicularis, Austrostipa platychaeta and Austrostipa elegantissima. They construct a shelter made from rolled leaves of its host plant where it rests during the day. Pupation takes place in this shelter.