| Microcelis schauinslandi Plehn, 1899 | prior to 1899 | | | |
| Acholades asteris Hickman & Olsen, 1955 | 1989 or earlier | | | lives encysted on the ambulacral tube-feet of the starfish Coscinasterias calamaria in Tasmanian waters. |
| Prorhynchus tasmaniensis Hickman, 1933 | 1932 | | | alpine tableland of Central Plateau, 3400 ft of Tasmania. Geology include erratics, cirques, and glacial lakes. Moors covered with a thick peaty soil, which is wet throughout the year. Found in temporary pools formed by rain from Lake Fenton to Wo |
| Microcelis schauinslandi Plehn, 1899 | 1899 or earlier | | | |
| Geoplana lucasi Dendy, 1891 | 1893 or earlier | | | A. Morton, Esq. |
| Geoplana mortoni Dendy, 1894 | 1893 or earlier | | | Alexander Morton, Esq. |
| Geoplana quinquelineata Fletcher & Hamilton, 1888 | 1915 or earlier | | | |
| Diskeria tasmanica Schockaert, Curini-Galletti, De Ridder & Artois, 2011 | 2011 or earlier | | | |
| Temnosewellia cita Hickman, 1967 | 1967 or earlier | | | host Parasticoides tasmanicus. |
| Seritia striata (Hickman, 1955) | 1955 or earlier | | | fom Stichopus mollis (Stichopodidae) |
| Notothrix inquilina Hickman, 1956 | 1955 or earlier | | | fom Mensamaria thompsoni (Phyllophoriidae) |
| Geoplana sanguinea Moseley, 1877 | 1977 or earlier | | | |