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Pseudotricula expandolabra Ponder, Clark, Eberhard & Studdert 2005

Diagnostic features

Pseudotricula expandolabra is similar to P. eberhardi but its shell differs in having a straight spire outline, a taller spire and the whorls are indented slightly below the shoulder.

Classification

Pseudotricula expandolabra Ponder, Clark, Eberhard & Studdert 2005

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Tateidae

Genus Pseudotricula Ponder, 1992

Original name: Pseudotricula expandolabra Ponder, Clark, Eberhard & Studdert 2005. Ponder, W.F., Clark, S.A., Eberhard, S. & Studdert, J.B. (2005) A radiation of hydrobiid snails in the caves and streams at Precipitous Bluff, southwest Tasmania, Australia (Mollusca: Caenogastropoda: Rissooidea: Hydrobiidae s.l.). Zootaxa 1074: 1-66.

Type locality: Screaming Stals Streamway, Bauhaus, Precipitous Bluff caves, Tasmania.

Biology and ecology

This species is found in narrow (less than 1m in width) cave streams with gentle to moderate (<1L/s to about 5L/s estimated flows). The substrate is mixed cobbles, gravel and silt and the microhabitats pools and riffles. Two samples were also found in seepages associated with this type of stream.

Distribution

Damper Cave (Honey and Cream and Cane Toad Abuse streamways and seep near The Keg) and Bauhaus (Persephone and Screaming Stals streamways and Persephone Pot), Precipitous Bluff caves, southern Tasmania.

Further reading

Ponder, W. F., Clark, S. A., Eberhard, S. & Studdert, J. B. (2005). A radiation of hydrobiid snails in the caves and streams at Precipitous Bluff, southwest Tasmania, Australia (Mollusca: Caenogastropoda: Rissooidea: Hydrobiidae s.l.). Zootaxa 1074: 1-66.