David Rentz received his PhD in Entomology from the University of California, Berkeley and worked in Philadelphia and San Francisco before moving to Australia. From 1976 to 2001 he was Curator of Orthopteroid Insects in the Australian National Insect Collection, Canberra (CSIRO). His research specialty, the katydids (family Tettigoniidae) has resulted in numerous papers and three volumes of a Monograph of Australian Tettigoniidae.
Now retired, he lives in Kuranda, Queensland and continues his studies and contributes to a blog: http://www.bunyipco.blogspot.com.au/ that documents the natural history of the rainforest in which he lives. He is past president of the Friends of the Cairns Botanic Gardens. He is an Adjunct Professorial Research Fellow, School of Marine & Tropical Biology, James Cook University where he advises students and participates in University life.