Placostylus bivaricosus etheridgei Hedley, 1891
Lord Howe flax snail, Lord Howe placostylus
Taxonomy & Nomenclature
Synonym/s: Bulimus bivaricosus etheridgei Hedley, 1891; Placostylus etheridgei 'Brazier', 1889 (nomen nudum); Placostylus bivaricosus royi Iredale, 1944
Placostylus bivaricosus is treated as monotypic by (MolluscaBase, 2021).
Conservation Status
Last record: "several decades [ago]" (Ponder et al. 2003:175)
IUCN RedList status: Extinct
Distribution
Lord Howe Island, Australia
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Hedley, Charles. (1891). The land and freshwater shells of Lord Howe Island. Records of the Australian Museum 1(7): 134-144, pls. xxi-xxii..
Other references:
Baillie, J. and Groombridge, B. (eds). 1996. 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.
Department of Environment and Climate Change (NSW). (2007). Lord Howe Island Biodiversity Management Plan Appendices. Department of Environment and Climate Change (NSW), Sydney. vii + 267 pp.
Hyman, Isabel T. and Köhler, F. (2020). A Field Guide to the Land Snails of Lord Howe Island. Australian Museum.
Iredale, Tom. (1944). The land Mollusca of Lord Howe Island. Australian Zoologist 10: 299-334.
MolluscaBase eds. (2021). MolluscaBase. Placostylus bivaricosus (Gaskoin, 1855). Accessed at: http://molluscabase.org/aphia.php?p=taxdetails&id=1149983 on 2022-03-30
NSW National Parks and Wildlife Service. (2001). Lord Howe Placostylus Placostylus bivaricosus recovery plan. NPWS, Hurstville, NSW.
Ponder, Winston F. (1996). Placostylus bivaricosus ssp. etheridgei. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. (http://www.iucnredlist.org). Downloaded on 27 July 2013.
Ponder, W.F. 1996. Placostylus bivaricosus ssp. etheridgei. The IUCN Red List of Threatened Species 1996: e.T17448A7078251. https://dx.doi.org/10.2305/IUCN.UK.1996.RLTS.T17448A7078251.en. Accessed on 04 July 2022.
Ponder, Winston, Colgan, Donald J., Gleeson, Dianne M. and Sherley, Greg H. (2003). Relationships of Placostylus from Lord Howe island: an investigation using the mitochondrial cytochrome c oxidase 1 gene. Molluscan Research 23: 159-178.