Amplirhagada kessneri
Overview
Amplirhagada kessneri is a land snail belonging to the family Camaenidae, a group renowned across the Kimberley region of Western Australia for its remarkable diversity of rock-dwelling, range-restricted species. Like its congeners, this snail is likely to possess a coiled, often depressed or globose shell with the fine sculpturing and banding patterns typical of camaenid taxa adapted to life among sandstone outcrops and rocky escarpments. Amplirhagada kessneri is restricted to a narrow geographic range within the Kimberley bioregion, where populations persist in isolated pockets of suitable rocky habitat, often associated with monsoon vine thickets, boulder piles, and sheltered crevices that buffer the snail from extreme heat and desiccation during the dry season.
This species is classified as Vulnerable (VU) under the IUCN Red List, reflecting its restricted distribution and reliance on specialised microhabitats that leave it inherently susceptible to localised disturbance. Encouragingly, the current population trend is assessed as stable, indicating that existing habitat conditions within its known range continue to support viable numbers, and that no acute, range-wide collapse has been documented to date. The remoteness of much of the Kimberley's sandstone country has, to some extent, shielded Amplirhagada kessneri and related species from the intensity of development pressures seen elsewhere in Australia, and ongoing taxonomic and distributional surveys of the genus continue to refine understanding of its true extent of occurrence.
Conservation of this species benefits from its association with broader Kimberley rock-habitat protections, and continued monitoring of fire regimes and feral herbivore impacts in the region will be important to maintaining the stable trajectory this species currently exhibits.
The primary pressures facing Amplirhagada kessneri stem from its naturally restricted range within Kimberley rock habitats, which makes localised populations vulnerable to altered fire regimes that can strip away the vine thicket and leaf-litter cover snails depend on for moisture retention. Trampling and habitat degradation from feral herbivores, including cattle and donkeys, pose an additional risk to the fragile rocky microhabitats this species occupies. Because camaenid land snails in this region often have very small, disjunct distributions, even modest habitat disturbance at a single site could disproportionately affect a significant share of the species' total population.
Habitat
Amplirhagada kessneri inhabits rocky sandstone outcrops and associated monsoon vine thicket microhabitats within the Kimberley region of Western Australia, sheltering in crevices and boulder piles that maintain humidity through the dry season.
Conservation measures underway
Other threatened species in CAMAENIDAE
Threatened in Australia
Frequently asked questions
Why is Amplirhagada kessneri classified as Vulnerable?
Where does Amplirhagada kessneri live?
What are the main threats to Amplirhagada kessneri?
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