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Fluvidona anodonta (Hedley & Musson, 1892)

Diagnostic features

Shell pupiform, with strongly convex whorls; operculum with 2.3 moderately long pegs. Fluvidona anodonta is very similar to F. petterdi in shell features but tends to be a little smaller. In opercular characters if differs in having shorter opercular pegs. The two taxa also differ in several anatomical characters but both have a simple penis.

This is one of several species of Fluvidona found in northern New South Wales and southern Queensland. They are all very similar, being separated on small differences in size and shape of the shells and in anatomical details. They have elongate-conic shells with adults having a slightly thickened aperture and the operculum bears one or more pegs

Classification

Fluvidona anodonta (Hedley & Musson, 1892)

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Tateidae

Genus Fluvidona Iredale, 1937

Original name: Pupa anodonta Hedley & Musson, 1892. Hedley, C., and Musson, C. T. 1892. On a collection of land and freshwater shells from Queensland. Proceedings of the Linnean Society of New South Wales 6: 551-564.

Type locality: North Pine River, Queensland.

Biology and ecology

Found under deeply embedded rocks of a small stream. Assumed to feed by scraping bacteria and possibly microalgae. Presumed solitary capsules with single egg. Direct development.

Distribution

North Pine River, Queensland.

Notes

Most species of Fluvidona are geographically isolated and have restricted ranges. This species is known only from the North Pine River system west of Brisbane.

Further reading

Hedley, C. & Musson, C. T. (1892). On a collection of land and freshwater shells from Queensland. Proceedings of the Linnean Society of New South Wales 6: 551-564.

Miller, A. C., Ponder, W. F. & Clark, S. A. (1999). Freshwater snails of the genera Fluvidona and Austropyrgus (Gastropoda, Hydrobiidae) from northern New South Wales and southern Queensland, Australia. Invertebrate Taxonomy 13: 461-493.

Ponder, W. F. (1994). Australian freshwater Mollusca: conservation priorities and indicator species. Memoirs of the Queensland Museum 36: 191-196.