E-Fauna BC: Electronic Atlas of the Wildlife of British Columbia

Ancotrema sportella (Gould, 1846)
Beaded Lancetooth
Family: Haplotrematidae

Species account author: Robert Forsyth.

Distribution of Ancotrema sportella in British Columbia

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Species Information

Among species of haplotrematids in BC, this is often the smallest species. It is most similar to Ancotrema hybridum but has the beaded colabral riblets continuing to the final part of the last whorl.

Shell

Small to medium-sized, disc-shaped; straw yellow to greenish-yellow; axial riblets beaded throughout by intersecting spiral lines; aperture lip with 'drooping' edge.

Animal

Body long, slender; cream-coloured, with dorsum, head and tentacles darker. Mantle with fine, pale brown speckling.

Habitat

Predominantly deciduous and mixedwood forests; living in deep leaf litter and under logs, other dead wood and rocks. It is sympatric with Ancotrema hybridum in some areas in southwest BC.

Distribution

Global range

BC to Del Norte, Siskiyou, and Humboldt counties, California (Roth and Sadeghian 2006); east through northern Washington and Idaho (Frest and Johannes 2001).

BC range

Southern and eastern Vancouver Island, the Sunshine Coast, and the Fraser Valley. There is some confusion with Ancotrema hybridum so the full extent of the range in BC is uncertain. It may be expected in southern areas of the Interior Wet Belt.

Ecozones

Pacific Maritime.

Notes

Etymology

Genus name derived from the Greek words, "ankon" (a bend or valley) and "trema" (aperture or hole); the gender is neuter. Species epithet, Latin, "little basket".

Status Information

Origin Status	Provincial Status	BC List (Red Blue List)	COSEWIC
Native	S4S5	Yellow	Not Listed

BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.

Taxonomic and Nomenclatural Links

Genetic and lineage information (NCBI Taxonomy Browser)

Additional Range and Status Information Links

NatureServe Explorer

Additional Photo Sources

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Related Databases

Mollus.ca Web Site
A Snail's Odyssey

General References

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Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2021. E-Fauna BC: Electronic Atlas of the Fauna of British Columbia [efauna.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-12-03 10:22:02 PM]

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