# Diala

Diala is a genus of sea snails, marine gastropod mollusks in the family Dialidae.

## Description

The whorls are not varicose, occasionally featuring nodules around the middle. The columella is relatively straight and not truncated. The outer lip is not thickened.

## Species

Species within the genus Diala include:
* Diala albugo (Watson, 1886)
* Diala exilis (Tryon, 1866)
* Diala lirulata Thiele, 1930
* Diala megapicalis Ponder & de Keyzer, 1992
* Diala pusilla Thiele, 1930
* 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)
* Diala virgata Hedley, 1899 (taxon inquirendum)

### Species brought into synonymy

* Diala acuta Carpenter, 1864: synonym of Pseudodiala acuta (Carpenter, 1864)
* Diala africana Bartsch, 1915: synonym of Diala almo Bartsch, 1915
* Diala almo Bartsch, 1915: synonym of Hydrobiidae incertae sedis almo (Bartsch, 1915) (original combination)
* 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)
* Diala stricta Habe, 1960: synonym of 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)
* Diala varia Adams A., 1861: synonym of 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)

### Taxa inquirenda

* † Diala angustifera Nomura, 1935
* Diala fragilis (Fenaux, 1943)
* Diala lirata H. Adams & A. Adams, 1864
* Diala nodicincta H. Adams & A. Adams, 1864
* Diala succincta A. Adams, 1870 (unassessed, use in recent literature not established by editor)