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Beddomeia fultoni Ponder and Clark, 1993

Diagnostic features

Species included in the B. bellii group are small to medium-sized (2.3-3.0 mm in length), ovate-conic to ovate and usually have a columellar swelling. The penis is simple (as in B. bellii and B protuberata) or with a lenticular brown gland in the middle. Species in this group are restricted to north western Tasmania.

This species differs from the otherwise similar B. mesibovi, B. topsiae, B. salmonis, and B. gibba, in the shell lacking a columellar swelling.

Classification

Beddomeia fultoni Ponder and Clark, 1993

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha

Superfamily Truncatelloidea

Family Tateidae

Genus Beddomeia Petterd, 1889

Original name: Beddomeia fultoni Ponder and Clark, 1993 in Ponder, W.F., Clark, G.A., Miller, A. & Toluzzi, A. 1993. On a major radiation of freshwater snails in Tasmania and eastern Victoria - a preliminary overview of the Beddomeia group (Mollusca: Gastropoda: Hydrobiidae). Invertebrate Taxonomy, 7: 501-750.

Type locality: Farnhams Creek on Bass Highway, 1.5km W of Christmas Hill, Tasmania.

Biology and ecology

On roots, stones, leaves and wood in stream. Egg capsules typical of Beddomeia - white, dome-shaped, with broad attachment base, covered with minute, mainly white sand grains and other fragments and containing a single egg. Development direct.

Distribution

This species is known from Farnhams Creek and a tributary of Fixters Creek at northern end of Brittons Swamp, Tasmania.

Notes

All species of Beddomeia are geographically isolated and have restricted ranges.

This species is on the Tasmanian Threatened species list of Invertebrate Animals as Endangered.

Further reading

Ponder, W. F., Clark, G. A., Miller, A. C. & Toluzzi, A. (1993). On a major radiation of freshwater snails in Tasmania and eastern Victoria: a preliminary overview of the Beddomeia group (Mollusca: Gastropoda: Hydrobiidae). Invertebrate Taxonomy 7: 501-750.