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Kessneria papillosa Walker and Ponder, 2001

Diagnostic features

Globose sinistral shell, elongate papillate protoconch, prominent open umbilicus, sinuous outer lip, constricted last whorl. Teleoconch sculpture of fine axial and spiral threads which become obsolete on later whorls. Columella relatively broad and shelf-like with distinct broad bulge adjacent to umbilicus. Eyes situated on lobes on median side of tentacles. Animal body grey with patches of grey pigment.

Classification

Kessneria papillosa Walker and Ponder, 2001

Class Gastropoda

Subclass Heterobranchia

Order Hygrophila

Superfamily Planorboidea

Family Planorbidae

Genus Kessneria Walker, J.C.& Ponder, W.F. 2001 (Type species: Kessneria papillosa Walker & Ponder, 2001) 

Original name: Kessneria papillosa Walker and Ponder, 2001. Walker, J. C.and Ponder, W. F. (2001). A new genus and species of Planorbidae (Gastropoda: Heterobranchia: Pulmonata) from northern Australia. Journal of Molluscan Studies 67: 153-160.

Type locality: Floodplains west of Adelaide River, near Owens Lagoon, Northern Territory.

Biology and ecology

Found in wet, seasonally inundated muddy depressions on flood plain.

Distribution

Timor Sea division of Northern Territory (Adelaide River floodplain).

Notes

Genetic study has shown that this species is closely related to Leichhardtia sisurnius.

Further reading

Walker, J. C. & Ponder, W. F. (2001). A new genus and species of Planorbidae (Mollusca: Gastropoda: Heterobranchia: Pulmonata) from northern Australia. Journal of Molluscan Studies 67: 153-160.