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The banded dune snail or Morro shoulderband, scientific name ''Helminthoglypta walkeriana'', is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Helminthoglyptidae. This species is endemic to Morro Bay and the central coast in San Luis Obispo County and Santa Barbara County, in California, the United States. ==Taxonomy== At the time the species was divided into two subtaxa (subspecies or varieties): ''H. w. walkeriana'' and *''H. w. morroensis'' The latter was thought to be extinct but was rediscovered. In 2004, it was elevated to species status as ''Helminthoglypta morroensis'' and it inherited the endangered status it had when it was part of ''Helminthoglypta walkeriana''. Both snails together were known as the banded dune snail. Today ''H. walkeriana'' is the Morro shoulderband, and ''H. morroensis'' is the Chorro shoulderband.〔USFWS. (Morro Shoulderband and Chorro Shoulderband Five-year Review. ) September 2006.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「banded dune snail」の詳細全文を読む スポンサード リンク
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