Shell variable in shape (depressed trochoid to elongate conic), with evenly convex whorls, umbilicate to nonumbilicate, usually lacking true sculpture but rarely (in one species) with axial growth lines thickened as riblets. Growth lines and outer lip of aperture prosocline; periphery of last whorl evenly convex. Operculum yellow to reddish brown, with eccentric nucleus, inner surface with or without white smear, sometimes with small homy lump on inner surface near nucleus but lacking lacking distinct pegs. Radula with central tooth typically having 2 pairs of basal processes, innermost larger; sometimes with 1 or 3 pairs. Males with an often coiled pallial vas deferens, distal penis usually lacking lobes.
Genus Jardinella Iredale & Whitley, 1938
Type species: Petterdiana thaanumi Pilsbry, 1900
Original reference: Iredale, T. & Whitley, G.P. (1938). The fluvifaunulae of Australia. South Australian Naturalist 18: 64-68.
Type locality: Near Cairns, Queensland; type locality restricted to Barron River.
Found in coastal streams on rocks, leaves and wood in the Wet Tropics and on sediment and weeds around the edges of springs in western Queensland. Egg capsules of the Wet Tropics Jardinella are transparent, lens-shaped, 0.48-0.53 mm in diameter, laid singly in umbilical chink of females. Great Artesian Basin Springs Jardinella produce large yolky eggs.
Jardinella occurs in two main areas in Queensland – a) Coastal Rivers of the Wet Tropics around Cairns. b) Great Artesian Basin Springs in western Queensland, these fall into four main categories:
1. Barcaldine Supergroup:- springs on the eastern edge of the Basin north east of Longreach, including Edgbaston Springs.
2. Spring sure Supergroup:- springs on the eastern side of the Basin west of Rolleston.
3. Springvale Supergroup:- springs on the western edge of the Basin south east of Boulia.
4. Eulo Supergroup:- springs on the southern side of the Basin west of Eulo.
Beesley, P. L., Ross, G. J. B. & Wells, A., Eds. (1998). Mollusca: The Southern Synthesis. Parts A & B. Melbourne, CSIRO Publishing.
Perez, K. E., Ponder, W. F., Colgan, D. J., Clark, S. A. & Lydeard, C. (2005). Molecular phylogeny and biogeography of Spring-associated hydrobiid snails of the Great Artesian Basin, Australia. Molecular Phylogenetics and Evolution 34: 545-556.
Ponder, W. F. (1991). The eastern seaboard species of Jardinella (Mollusca, Gastropoda, Hydrobiidae), Queensland rainforest-inhabiting freshwater snails derived from the west. Records of the Australian Museum 43: 275-289.
Ponder, W. F. & Clark, G. A. (1990). A radiation of hydrobiid snails in threatened artesian springs in western Queensland. Records of the Australian Museum 42: 301-363.
Ponder, W. F. & Slatyer, C. (2007). Freshwater molluscs in the Australian arid zone. Pp. 1-13 in C. Dickman, Lunney, D. & Burgin, S. Animals of arid Australia: out on their own? Mosman, NSW, Royal Zoological Society of NSW.
Ponder, W. F., Wilke, T., Zhang, W.-C., Golding, R. E., Fukuda, H. & Mason, R. A. B. (2008). Edgbastonia alanwillsi n. gen. and n. sp. (Tateinae: Hydrobiidae s.l.: Rissooidea: Caenogastropoda): a snail from an artesian spring group in western Queensland, Australia, convergent with some Asian Amnicolidae. Molluscan Research 28: 89-106.