Shell trochiform, medium to moderate size (up to about 4 mm in length), smooth except for growth lines, whorls convex or with angulated shoulder; umbilical chink or narrow umbilicus present. Aperture broadly ovate, peristome thickened internally; inner lip attached to parietal wall. Protoconch of 1.2–1.4 whorls, minutely sculptured with irregular pits and rugae. Operculum yellowish with reddish tinge, oval, paucispiral with last whorl large, nucleus acentric, inner surface with or without small white smear, and sometimes traces of two or three weak protuberances. Radula with median cusp of central teeth wider and longer than adjacent cusps; lateral margins rather wide; innermost basal cusps short; third rudimentary cusp sometimes present. Basal tongue short, broad Ushaped. Rectum with U-shaped arch. Male with large, bean-shaped prostate gland, about half in pallial roof. Pallial vas deferens convoluted. Penis with broad base and long, tapering, non-pigmented distal portion lacking lobes or processes; glands absent. Female with simple-U-shaped coiled oviduct, orientated near vertically, coiled oviduct extends to near anterior edge of bursa copulatrix or is anterior to it. Bursa copulatrix slightly overlaps posterior end of albumen gland. Capsule gland longer and broader than albumen gland. Pallial oviduct with vestibule narrower or same width as ventral channel, pallial opening at about one third length of capsule gland; no cowl and/or gutter associated with oviduct opening (from Ponder et al. 2021).
Jardinella Iredale & Whitley, 1938
Class Gastropoda
Infraclass Caenogastropoda
Order Littorinida
Suborder Rissoidina
Superfamily Truncatelloidea
Family Tateidae
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 rivers and streams on rocks, leaves and wood in the Wet Tropics. Egg capsules are transparent, lens-shaped, 0.48-0.53 mm in diameter, and have been seen laid singly in the umbilical chink of females.
Jardinella occurs in coastal rivers of the Wet Tropics, from the vicinity of Cairns south to Tully.
Jardinella, like other related Queensland tateid genera, has two pairs of cusps on the central teeth of the radula and never develops "calcareous" pegs on the operculum, although there is often a white smear.
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. (1994). Australian freshwater Mollusca: conservation priorities and indicator species. Memoirs of the Queensland Museum 36: 191-196.
Ponder, W. (2019). Tateidae Thiele, 1925. Pp. 134-138 in C. Lydeard & Cummings, K. S. Freshwater Mollusks of the World: a Distribution Atlas. Baltimore, John Hopkins University Press.
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.
Ponder, W. F., Zhang, W. -H., Hallan, A., & Shea, M. E. (2019). New taxa of Tateidae (Caenogastropoda, Truncatelloidea) from springs associated with the Great Artesian Basin and Einasleigh Uplands, Queensland, with the description of two related taxa from eastern coastal drainages. Zootaxa 4583(1): 1-67.
