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Glacidorbis atrophus Ponder & Avern, 2000

Diagnostic features

This species differs from G. bicarinatus in having weaker dorsal and ventral keels placed close to the suture and more distinct axial sculpture.G. catomus has a similar configuration of the keels but lacks the distinct axial costae on the spire.

Classification

Glacidorbis atrophus Ponder & Avern, 2000

Class Gastropoda

Subclass Heterobranchia

Superfamily Glacidorboidea

Family Glacidorbidae

Genus Glacidorbis Iredale, 1943

Original name: Glacidorbis atrophus 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: Tributary of Big Creek, off Tram Rd, about 8km south of Wynyard, Tasmania.

Biology and ecology

In small streams, springs and swamps, amongst moss, roots of water plants etc.

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

North-western and northern central Tasmania.

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.