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Austropyrgus lippus Clark, Miller & Ponder 2003

Diagnostic features

This species belongs to the Austropyrgus cooma group, whose members are characterised by generally pupiform to conical, small to medium sized shells, where the last whorl and base are evenly convex.

This is one of several species of Austropyrgus found in the southern half of New South Wales. 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 several pegs. Most species of Austropyrgus are geographically isolated and have restricted ranges. This is one of three species found in the vicinity of Wombeyan Caves. This species differs from the others in its smaller size and unpigmented animal. The other species (A. wombeyanensis, A. avius) found at or near the caves are larger, darker and have pigmented animals.

Classification

Austropyrgus lippus Clark, Miller & Ponder 2003

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha

Superfamily Truncatelloidea

Family Tateidae

Genus Austropyrgus Cotton, 1942

Original name: Austropyrgus lippus Clark, Miller & Ponder 2003. Clark, S. A., Miller, A. C. and Ponder, W. F. (2003). Revision of the snail genus Austropyrgus (Gastropoda: Hydrobiidae): A morphostatic radiation of freshwater gastropods in southeastern Australia.  Records of the Australian Museum Supplement 28: 1–109.

Type locality: Very small spring just below pumphouse, Wombeyan Caves, New South Wales.

Biology and ecology

In sediment, litter and weeds around the exits of small springs. Assumed to feed by scraping bacteria. 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 from a few small springs in and around Wombeyan Caves, New South Wales.

Notes

Most members of Austropyrgus, including this species, are geographically isolated and have restricted ranges.

Further reading

Clark, S. A., Miller, A. C. & Ponder, W. F. (2003). Revision of the snail genus Austropyrgus (Gastropoda: Hydrobiidae): a morphostatic radiation of freshwater gastropods in southeastern Australia. Records of the Australian Museum 28: 1–109.