Post by another specialist on May 15, 2006 21:05:23 GMT
Red List Category & Criteria EX ver 2.3 (1994) Year Assessed 1996 Assessor/s Mollusc Specialist Group History 1983 - Endangered (Wells et al. 1983) 1990 - Extinct (IUCN 1990) 1994 - Extinct? (Groombridge 1994)
Post by another specialist on May 15, 2006 21:07:25 GMT
Historical range from Helemano to Waimano, a distance of nine miles. This species was originally described Kalaikoa, Wahiawa, and Helemanu [Helemano], Oahu, Hawaiian Islands (Johnson, 1996). This species occurs in the Koolau Mountains, on the Hawaiian Island of Oahu (Severns, 2011).
One post-1945 occurrence (1951). Likely extinct (Hawaii Biological Survey web site http:/hbs.bishopmuseum.org/endangered/ext-snails.html, updated 9 February 1997).
U.S. Fish and Wildlife Service, (2011a). Oahu tree snails (Achatinella spp.) 5-Year Review.
In the 1992 recovery plan for the O`ahu tree snails of the genus Achatinella, A. juncea was classified as having the status of probably extinct. Achatinella juncea historically was located on the leeward slopes of the northern Ko`olau Mountains and its last known record is unknown (USFWS 1992). The majority of its historical range overlaps the southern half of the US Army’s Kawailoa Training Area. Portions of the historical range of A. juncea have been surveyed extensively, because they lie within the US Army’s Kawailoa Training Area, where there are current populations of Achatinella spp. The ANRS has not found any living snails or shells of A. juncea during their surveys (US Army 2009).