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Westrapyrgus westralis Ponder, Clark and Miller, 1999

Diagnostic features

Shell conical, whorls weakly convex, periphery subangled; head-foot unpigmented.  

Classification

Westrapyrgus westralis Ponder, Clark and Miller, 1999

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Tateidae

Genus Westrapyrgus Ponder, Clark and Miller, 1999

Original name: Westrapyrgus westralis Ponder, Clark and Miller, 1999. Ponder, W. F., Clark, S. A.  & Miller, A. C. (1999). A new genus and two new species of Hydrobiidae (Mollusca: Gastropoda: Caenogastropoda) from south Western Australia. Journal of the Royal Society of Western Australia 82: 109–120.

Type locality: ‘The Spring’, off Skippy Rock Rd, Leeuwin-Naturaliste National Park, Western Australia.

Biology and ecology

In coastal springs below cliffs, on moist mud and litter on the sides of streams and in water supply filters. Locally abundant.

Distribution

This species has been found in several coastal springs in southwest Australia, between Cape Naturaliste and the Weld River.

Notes

This species has a similar distribution to that of another caenogastropod, Austroassiminea letha Solem et al. 1982, a species that is also restricted to coastal springs and seepages (Solem et al. 1982), and the two species are found together in two localities (Ellen Brook, Turner Brook near Deepdene Cliffs).

Further reading

Ponder, W.F., Clark, S. A. & Miller, A. C. (1999). A new genus and two new species of Hydrobiidae (Mollusca: Gastropoda: Caenogastropoda) from south Western Australia. Journal of the Royal Society of Western Australia 82: 109–120.