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Glacidorbis otwayensis Ponder & Avern, 2000

Diagnostic features

This tiny (1 mm maximum diameter) species has a weak dorsal keel and a ventral subangulation.

Classification

Glacidorbis otwayensis Ponder & Avern, 2000

Class Gastropoda

Subclass Heterobranchia

Superfamily Glacidorboidea

Family Glacidorbidae

Genus Glacidorbis Iredale, 1943

Original name: Glacidorbis otwayensis Ponder & Avern, 2000. Ponder, W. F. and. Avern, G. J. (2000). The Glacidorbidae (Mollusca: Gastropoda: (Heterobranchia) of Australia. Records of the Australian Museum 52: 307–353.

Type locality: Small creek at road bridge 3 km south of Nirranda East on road to Curdie Vale, Otway Ranges, Victoria.

Biology and ecology

This species occurs in small streams, springs and swamps, and amongst moss and roots of water plants.

Additional information on the biology and ecology of members of this family can be found in Fauna of Australia, vol. 5B, p. 1075-1076 and in Ponder and Avern (2000).

Distribution

South-western Victoria.

Notes

 This is the only Glacidorbis known from the Otway Ranges.

Further reading

Ponder, W. F. (1986b). Glacidorbidae (Glacidorbacea: Basommatophora), a new family and superfamily of operculate freshwater gastropods. Zoological Journal of the Linnean Society 87: 53-83.

Ponder, W. F. & Avern, G. J. (2000). The Glacidorbidae (Mollusca: Gastropoda: Heterobranchia) of Australia. Records of the Australian Museum 52: 307-353.