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Fluvidona dorrigoensis Miller, Ponder and Clark, 1999

Diagnostic features

This species has strongly convex whorls and the operculum differs in having 1-2 very short pegs. The penis is simple.

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 dorrigoensis Miller, Ponder and Clark, 1999

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Tateidae

Genus Fluvidona Iredale, 1937

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

Type locality: Moonmerri Creek, near Dorrigo, New South Wales.

Biology and ecology

Under stones in small stream, uncommon. Assumed to feed by scraping bacteria and possibly microalgae. Presumed solitary capsules with single egg. Direct development.

Additional information on the biology and ecology of members of this family can be found in Fauna of Australia, vol. 5B, p. 752-755.

Distribution

Known only from a small stream near Dorrigo, New South Wales.

Notes

Most species of Fluvidona are geographically isolated and have restricted ranges. This species is known from a small stream near Dorrigo.

Further reading

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.