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.
Fluvidona dorrigoensis Miller, Ponder & Clark, 1999
Class Gastropoda
Infraclass Caenogastropoda
Order Littorinida
Suborder Rissoidina
Superfamily Truncatelloidea
Family Tateidae
Original name: Fluvidona dorrigoensis Miller, Ponder & Clark, 1999. In 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. Invertebrate Taxonomy 13: 461-493.
Type locality: Moonmerri Creek, near Dorrigo, New South Wales.
Under stones in small stream, uncommon. Assumed to feed by scraping bacteria and possibly microalgae. Presumed solitary capsules with single egg. Direct development.
Known only from a small stream near Dorrigo, New South Wales.
Most species of Fluvidona are geographically isolated and have restricted ranges. This species is known from a small stream near Dorrigo.
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.
