膀胱螺属（学名：Physa），又名囊螺属[4]，属软体动物门腹足纲异鳃类泛有肺类喜湿螺类支序的膀胱螺科，是一种细小的淡水螺，能在空气呼吸。本属的学名“Physa”在[古希脑语]]的意思就是“风箱”[5]。
物种
现存物种：
- 尖膀胱螺（Physa acuta Draparnaud, 1805）
- Physa ancillaria (Say, 1825) - Pumpkin Physa[6]
- Physa carolinae Wethington, Wise & Dillon, 2009[7]
- Physa concolor
- 泉膀胱螺（Physa fontinalis (Linnaeus, 1758)）：模式种
- Physa hordacea (I. Lea, 1864)
- Physa jennessi Dall, 1919
- Physa lordi (Baird, 1863)
- Physa marmorata Guilding, 1828[8] - synonyms: Physa mosambiquensis Clessin, 1886 and Physa waterloti[8]
- Physa megalochlamys Taylor, 1988
- † Physa mezzalirai Ghilardi, Carbonaro & Simone, 2011 - fossil from Brazil[9]
- Physa natricina Taylor, 1988
- Physa nuttalli
- Physa propingua (Tryon, 1865)
- Physa pumilia Conrad, 1834
- Physa siberica Westerlund, 1876
- Physa skinneri Taylor, 1954
- Physa vernalis Taylor et Jokinen, 1984
- Physa sp., Lake Winnipeg Physa, lives in Manitoba in Canada. It was classified as endangered by COSEWIC. COSEWIC recommendation has been forwarded to the Minister of the Environment of Canada and a decision for listing at the List of Wildlife Species at Risk of the Canadian Species at Risk Act was pending in 2005.[10]
同种异名：
- Physa acuta Draparnaud, 1805, Physa heterostropha (Say, 1817), Physa integra (Haldeman, 1841) and Physa natricina Taylor, 1988 are synonyms of Physella acuta (Draparnaud, 1805)
- Physa columbiana (Hemphill, 1890) is a synonym for Physella columbiana (Hemphill, 1890)
- Physa gyrina (Say, 1821) is a synonym for Physella gyrina'' (Say, 1821)
化石物种：
参考文献
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