天螺屬（學名：_Diala_）是一個海螺的屬，屬於天螺科的海洋腹足綱軟體動物。



物種

下列部分本屬物種：


* 麻天螺 _Diala albugo_ (Watson, 1886)

* _Diala almo_ Bartsch, 1915

* 綴天螺 _Diala bella_ A. Adams, 1868

* _Diala exilis_ (Tryon, 1866)

* _Diala lirulata_ Thiele, 1930

* _Diala megapicalis_ Ponder & de Keyzer, 1992

* 台灣天螺 _Diala nyussana_ (Smith, 1877)

* 光天螺 _Diala planalba_ Laseron, 1956。

* 綠島天螺 _Diala polymorpha_ (Smith, 1877)

* 精天螺 _Diala semistriata_ (Philippi, 1849) - type species as _Diala varia_ Adams A., 1861

* _Diala stephensae_ (Baker, Hanna & Strong, 1930)

* _Diala sulcifera_ (A. Adams, 1862) - synonym: _Diala flammea_ (Pease, 1868)

* _Diala suturalis_ (A. Adams, 1863) - synonym: _Diala lauta_ (Adams)

異名


* _Diala acuta_ Carpenter, 1864: synonym of _Pseudodiala acuta_ (Carpenter, 1864)

* _Diala africana_ Bartsch, 1915: synonym of _Diala almo_ Bartsch, 1915

* _Diala basispiralis_ (Chapman-Smith & Grant-Mackie, 1971): synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala cacuminata_ Laseron, 1956: synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala capensis_ G. B. Sowerby III, 1889: synonym of _Alaba pinnae_ (Krauss, 1848)

* _Diala conica_ Turton, 1932: synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala cornea_ A. Adams, 1861: synonym of _Alaba cornea_ (A. Adams, 1861)

* _Diala diffilata_ Laseron, 1956: synonym of _Alaba diffilata_ (Laseron, 1956)

* _Diala electrina_ Carpenter, 1864: synonym of _Lirobarleeia_ Ponder, 1983

* _Diala flammea_ (Pease, 1868: synonym of _Diala sulcifera_ (A. Adams, 1862)

* _Diala fragilis_ Thiele, 1930: synonym of _Alaba fragilis_ (Thiele, 1930)

* _Diala fuscopicta_ E. A. Smith, 1890: synonym of _Barleeia fuscopicta_ (E. A. Smith, 1890)

* _Diala hartmeyeri_ Thiele, 1930: synonym of _Alaba hartmeyeri_ (Thiele, 1930)

* _Diala infrasulcata_ G.B. Sowerby III, 1892 : synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala lauta_ (Adams, 1862): synonym of _Diala suturalis_ (A. Adams, 1863)

* _Diala leithii_ (E. A. Smith, 1876): synonym of _Mainwaringia leithii_ (E. A. Smith, 1876)

* _Diala lirata_ Laseron, 1950: synonym of _Diffalaba opiniosa_ Iredale, 1936

* _Diala ludens_ Melvill & Standen, 1895: synonym of _Diala albugo_ (Watson, 1886)

* _Diala macula_ Nevill, 1885: synonym of _Diala varia_ A. Adams, 1861: synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala marmorea_ Carpenter, 1864: synonym of _Pseudodiala acuta_ (Carpenter, 1864)

* _Diala pinnae_ (Krauss, 1848): synonym of _Alaba pinnae_ (Krauss, 1848)

* _Diala planalba_ Laseron, 1956: synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala polita_ Preston, 1905: synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala simplex_ E. A. Smith, 1875: synonym of _Barleeia simplex_ (E. A. Smith, 1875)

* 精天螺 _Diala stricta_ Habe, 1960：即 _Diala semistriata_ (Philippi, 1849)

* _Diala tesselata_ Tenison-Woods, 1876: synonym of _Alaba monile_ A. Adams, 1862

* _Diala translucida_ Hedley, 1905: synonym of _Styliferina translucida_ (Hedley, 1905)

* _Diala trilirata_ Melvill, 1906: synonym of _Diala semistriata_ (Philippi, 1849)

* 天螺 _Diala varia_ Adams A., 1861：即 _Diala semistriata_ (Philippi, 1849)

* _Diala vestigia_ Laseron, 1956: synonym of _Diala semistriata_ (Philippi, 1849)

* _Diala vitrea_ G. B. Sowerby III, 1915: synonym of _Diffalaba vitrea_ (G. B. Sowerby III, 1915)

* _Diala watsoni_ Laseron, 1956: synonym of _Diala semistriata_ (Philippi, 1849)



型態描述

如同其他同屬天螺科的物種，本屬物種的螺殻亦屬小型，呈高圓錐形。殼口單純，外唇不肥厚，也不形成水管溝。胚螺通常平滑。口蓋為少旋木葉型。足的後部有蓋葉形的膜狀延伸。



分佈

主要分布於台灣，常見於水深 5-45 米的細沙底質。
本物種見於台灣綠島。



參考文獻



外部連結


* 維基物種上的相關資訊：天螺屬

* Ponder, W. F.; de Keyzer, R. A revision of the genus _Diala_ (Gastropoda: Cerithioidea: Dialidae). _Invertebrate Taxonomy_. 1992, 6: 1019–1075 （英語）.

* Gofas, S.; Le Renard, J.; Bouchet, P. Mollusca. Costello M. J. et al. (編). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification 50. 2001: 180–213 （英語）.