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
Infraclass Caenogastropoda
Order Littorinida
Suborder Rissoidina
Superfamily Truncatelloidea
Family Bithyniidae
Original name: Gabbia obesa Ponder, 2003. In 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.
This species lives in large to small temporary water bodies, on mud and weed.
Flood plains of the Gulf of Carpentaria.
Ponder, W. F. (2003). Monograph of the Australian Bithyniidae (Caenogastropoda: Rissooidea). Zootaxa 230: 1-126.
