The shell is white, umbilicate and small (maximum length about 1.7 mm), being smaller than C. carnarvonensis and has a shorter spire.
The long, slit-like oviduct opening and absence of a bursa copulatrix are important characters distinguishing this species.
Carnarvoncochlea exigua (Ponder & Clark, 1990)
Class Gastropoda
Infraclass Caenogastropoda
Order Littorinida
Suborder Rissoidina
Superfamily Truncatelloidea
Family Tateidae
Genus Carnarvoncochlea Ponder, Zhang, Hallan & Shea, 2019.
Original name: Jardinella exigua Ponder & Clark, 1990. In 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(3): 301-363.
Type locality: small seep about 1.2 km northwest of "Dooloogarah" Homestead, south of Carnarvon Gorge National Park, Queensland.
Ponder et al. (2019) recorded variation and indicated that revision of these snails is necessary. Specimens from springs on Carnarvon Station to the north of Carnarvon Gorge are also tentatively assigned to this species.
Lives in hillside springs and seepages near Carnarvon Gorge and in small springs on Carnarvon Station in southwest Queensland.
Springs near "Dooloogarah" Homestead, south of Carnarvon Gorge National Park, Queensland.
Specimens from springs on Carnarvon Station to the north of Carnarvon Gorge are tentatively assigned to this species.
Fensham, R., Ponder, W. & Fairfax , R. (2010). Recovery plan for the community of native species dependent on natural discharge of groundwater from the Great Artesian Basin. Report to Department of the Environment, Water, Heritage and the Arts, Canberra. Queensland Department of Environment and Resource Management, Brisbane. https://www.environment.gov.au/system/files/resources/0cefc83a-3854-4cff-9128-abc719d9f9b3/files/great-artesian-basin-ec.pdf
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. & 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., 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.
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.
