Steorra bala, copyright Claude & Amandine Evanno.

Belongs within: Helicoidei.

Steorra is a genus of large snails with a banded or monochrome shell found in northeastern Queensland (Stanisic et al. 2010).

Characters (from Stanisic et al. 2010): Shell large to very large, solid to fairly thin, turbinately globose to trochoidally globose with a low to elevated conical spire; whorls rounded to subangulate, sutures impressed; protoconch with weak radial ridges, teleoconch smooth, microsculpture of crowded pustules or periostracal scales on the early whorls, and widely spaced to crowded periostracal microradial ridges on the later whorls; lip reflected, occasionally thickened; umbilicus narrowly open to closed. Colour tawny yellow with numerous dark brown spiral bands, dark brown suffusion behind lip and dark brown circum-umbilical patch, to all-over monochrome dark reddish brown; lip reflected, dark brown.

<==Steorra Stanisic in Stanisic, Shea et al. 2010 SS10
    |--*S. mourilyani (Brazier 1875) (see below for synonymy) SS10
    |--S. bala (Brazier 1878) [=Helix bala] SS10
    |--S. bellaria (Iredlae 1937) [=Gnarosophia bellaria] SS10
    |--S. cookensis (Brazier 1875) (see below for synonymy) SS10
    |--S. crookshanksi Stanisic in Stanisic, Shea et al. 2010 SS10
    |--S. estherlilleyae Stanisic in Stanisic, Shea et al. 2010 SS10
    |--S. jimfergusoni Stanisic & Potter in Stanisic, Shea et al. 2010 SS10
    |--S. mazee (Brazier 1878) [=Helix mazee] SS10
    |--S. mulgravensis (Brazier 1872) (see below for synonymy) SS10
    |--S. rawnesleyi (Brazier 1873) [=Helix (Camaena) rawnesleyi] SS10
    |--S. tomsoni (Brazier 1876) [=Helix (Hadra) tomsoni] SS10
    `--S. worsfoldi Stanisic in Stanisic, Shea et al. 2010 SS10

Steorra cookensis (Brazier 1875) [=Helix (Hadra) cookensis; incl. H. bebias Brazier 1878, Pallidelix spurlingi Iredale 1937] SS10

*Steorra mourilyani (Brazier 1875) [=Helix (Hadra) mourilyani; incl. Varohadra banfieldi Iredale 1937, H. (H.) hanni Brazier 1876, H. (H.) hilli Brazier 1875, Varohadra hubbardi Iredale 1937, H. (H.) johnstonei Brazier 1875, V. russelli Iredale 1937] SS10

Steorra mulgravensis (Brazier 1872) [=Helix mulgravensis; incl. Gnarosophia palmensis austrina Iredale 1933, H. palmensis meridionalis Brazier 1881, G. mitifica Iredale 1933, H. incei multifasciata Cox 1864 non H. multifasciata Weinland & Anton 1857, H. (Hadra) palmensis Brazier 1876] SS10

*Type species of generic name indicated


[SS10] Stanisic, J., M. Shea, D. Potter & O. Griffiths. 2010. Australian Land Snails vol. 1. A. field guide to eastern Australian species. Bioculture Press: Mauritius.

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