Subterranean Tateidae (Gastropoda; Caenogastropoda; Truncatelloidea) from the Ngalia Basin, Northern Territory, Australia

Winston F. Pondera*, William F. Humphreysbc, Michael E. Sheaa, Gaynor Dolmand & Francesco Criscioneaa Malacology Section, Australian Museum, Sydney, Australiab Collections and Research Centre, Western Australian Museum, Welshpool, Australiac School of Animal Biology, University of Western Australia, Crawley, Australiad School of Biological Sciences, University of Adelaide, Adelaide, AustraliaCONTACT Winston F. Ponder wponder@bigpond.net.au Malacology Section, Australian Museum, 6 College Street, Sydney, New South Wales 2010, AustraliaSupplemental data for this article can be accessed https://doi.org/10.1080/13235818.2021.2015832.ABSTRACTA new tateid genus, Ngalidrobia n. gen., containing six new species, is described from groundwater sampled from wells in the Ngalia Basin in the Northern Territory, Australia. The new species differ in their shell morphology which ranges from near planispiral to conical. Of these species, two live in sympatry in one location, the remainder being allopatric. Of the named tateid genera, Ngalidrobia is, on the basis of molecular results using three partial sequences (cytochrome c oxidase subunit I, and 16S and 28S ribosomal RNA), most closely related to Trochidrobia from artesian springs in northern South Australia.