Potbellied Helicellid
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Potbellied Helicellid

Cochlicella barbara

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Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Cochlicella_barbara

Overview

Cochlicella barbara is a small, elongate-conical land snail in the family Geomitridae, recognizable by its narrow, tapering shell and pale banded coloration. Like other stylommatophoran gastropods, it is a herbivorous grazer, feeding on algae, fungi, and decaying plant material on low vegetation and soil surfaces, and it plays a minor but consistent role in nutrient cycling and detrital breakdown within the ecosystems it occupies. It is also a food source for various invertebrate and vertebrate predators.

The species has an unusually wide global distribution for a land snail, occurring across parts of Europe, North Africa, the Middle East, southern Africa, Australia, New Zealand, and numerous island territories in the Atlantic, Caribbean, and Mediterranean, as well as isolated records in Southeast Asia. It is exclusively terrestrial, typically found in open, dry grassland, coastal scrub, and disturbed or agricultural land, often in calcareous or sandy soils.

Despite this broad range, populations are under pressure from coastal development and urbanization, agricultural intensification, and habitat fragmentation, all of which reduce and isolate suitable ground cover. Increasing drought frequency linked to climate change further stresses populations, as does competition from invasive snail and slug species that share its habitat and resources.

Specific conservation programs targeting this species are not well documented, and population trends remain unknown, complicating efforts to prioritize intervention. Broader habitat protection and invasive species management in coastal and agricultural zones may incidentally benefit it. Given its Critically Endangered status combined with unresolved population data, its long-term trajectory remains uncertain, underscoring a need for systematic monitoring across its range.

The Potbellied Helicellid faces mounting pressure as coastal areas are built up with homes and infrastructure, while nearby farmland expansion and more intensive agriculture destroy or fragment its natural habitat. Hotter, drier conditions linked to climate change are making its environment harder to survive in, and it also has to compete with invasive species moving into its territory. Taken together, these ongoing threats appear to be intensifying rather than easing.

Threat summary

Habitat

Mediterranean coastal scrublands, dry grasslands, and rocky slopes with sparse vegetation, typically on calcareous soils. The species inhabits areas with specific moisture and temperature regimes, often near the coast where it can find suitable microhabitats among low shrubs and herbaceous plants.

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Frequently asked questions

Why is Potbellied Helicellid classified as Critically Endangered?
Potbellied Helicellid is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. The Potbellied Helicellid faces mounting pressure as coastal areas are built up with homes and infrastructure, while nearby farmland expansion and more intensive agriculture destroy or fragment its natural habitat. Hotter, drier conditions linked to climate change are making its environment harder to survive in, and it also has to compete with invasive species moving into its territory. Taken together, these ongoing threats appear to be intensifying rather than easing.
Where does Potbellied Helicellid live?
Potbellied Helicellid occurs in Albania, Algeria, Australia, Austria, Azerbaijan, and Bahamas (plus 37 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Potbellied Helicellid?
The main threats to Potbellied Helicellid are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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