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Gabbia pallidula Ponder, 2003

Diagnostic features

This species is similar to G. campicola and falls within the distribution of that taxon. However, it is smaller than the former. Furthermore, G. pallidula lacks a pigmented mantle and the gill apices are located further to the left than in G. campicola. In addition, the lateral teeth of the radula have a straighter dorsal margin, the median cusp on the lateral teeth has a rounded end in two of the three specimens of G. pallidula (pointed in all G. campicola examined - Ponder 2003) and there tend to be more cusps on the marginal teeth. The bursa copulatrix is also wider in G. pallidula than in G. campicola.

Classification

Gabbia pallidula Ponder, 2003

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Bithyniidae

Genus Gabbia Tryon, 1865

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

Type locality: Unnamed spring near Smokey Creek, adjacent to The Springs HS, approximately 83 km north-northeast of Aramac, Queensland.

Biology and ecology

See below.

Distribution

Known only from the type locality, an artesian spring in the Barcaldine Supergroup in western Queensland, where it occurs in mud in the pool at the base of the spring.

Further reading

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