Hendrich, L.; Fery, H. Paroster baylyi Sp. n., P. Ursulae sp. N. (Col. Dytiscidae, Hydroporinae) and the Water Beetle Diversity of Pan-Gnammas on Isolated Granite Outcrops in the Mallee of South-Western Australia. Zootaxa 2008, 1704, 27–41.