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.
Gabbia pallidula Ponder, 2003
Class Gastropoda
Infraclass Caenogastropoda
Order Littorinida
Suborder Rissoidina
Superfamily Truncatelloidea
Family Bithyniidae
Original name: Gabbia pallidula Ponder, 2003. In 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.
See below.
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.
Fensham, R., Ponder, W. & Fairfax , R. (2010). Recovery plan for the community of native species dependent on natural discharge of groundwater from the Great Artesian Basin. Report to Department of the Environment, Water, Heritage and the Arts, Canberra. Queensland Department of Environment and Resource Management, Brisbane. https://www.environment.gov.au/system/files/resources/0cefc83a-3854-4cff-9128-abc719d9f9b3/files/great-artesian-basin-ec.pdf
Ponder, W. F. (2003). Monograph of the Australian Bithyniidae (Caenogastropoda: Rissooidea). Zootaxa 230: 1-126.
