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Gabbia obesa  Ponder, 2003

Diagnostic features

This species differs from the other smooth-shelled species in being distinctly umbilicate in its smaller stages, the umbilicus narrowing in full-sized specimens and sometimes being almost closed. The whorls are very strongly convex and the shell outline is similar to that of the broadly-ovate forms of G. adusta, and it is with this species that the relationships of this taxon possibly lie. That species, however, has distinct axial riblets crossed by fine spirals.


Gabbia obesa  Ponder, 2003

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Bithyniidae

Genus Gabbia Tryon, 1865

Original nameGabbia obesa Ponder, 2003. Ponder, W.F. (2003) Monograph of the Australian Bithyniidae (Caenogastropoda: Rissooidea). Zootaxa 230: 1-126.

Type locality: Harris Lake, south of Burketown, on Burketown - Normanton Road, on mud and weed.

Biology and ecology

This species lives in large to small temporary water bodies, on mud and weed.


 Flood plains of the Gulf of Carpentaria.

Further reading

Ponder, W. F. (2003). Monograph of the Australian Bithyniidae (Caenogastropoda: Rissooidea). Zootaxa 230: 1-126.