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Sagda alligans shell.jpg
Two adult shells and one juvenile shell of Sagda alligans
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia

clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra

Superfamily: Sagdoidea
Family: Sagdidae
Pilsbry, 1895[1] (Sagdinae is on page xxxii.)
Type genus

See text

Sagdidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks with highest diversity in the Greater Antilles. It has been classified in its own superfamily Sagdoidea [2] and as a member of the superfamily Helicoidea.[3] Some species of Sagdidae are ovoviviparous.[4]


Vestigial love darts exist in some species within this family.

Subfamilies and genera[edit]

The family Sagdidae consists of four subfamilies:[2]

  • Sagdinae Pilsbry, 1895
  • Aquebaninae H. B. Baker, 1940
  • Platysuccineinae H. B. Baker, 1940
  • Yunqueinae Schileyko, 1998

Genera in the family Sagdidae include:[5]

The type genus is Sagda Beck, 1837.


  1. ^ Pilsbry H. A. (2 February) 1895 Guide to the study of helices. Manual of conchology; structural and systematic. With illustrations of the species. Second series: Pulmonata. Volume 9. 36, 33a:i-xlviii, 161-336, plates 41-71.
  2. ^ a b Bouchet, P. & Rocroi, J.-P. 2005. Classification and nomenclator of gastropod families. Malacologia 47: 1-397.
  3. ^ Wade, C. M., Mordan, P. B. & Naggs, F. 2006. Evolutionary relationships among the Pulmonate land snails and slugs (Pulmonata, Stylommatophora). Biological Journal of the Linnean Society 87: 593-610. Abstract.
  4. ^ Goodfriend, G. A. 1986. Radiation of the land snail genus Sagda (Pulmonata: Sagdidae): comparative morphology, biogeography and ecology of the species of north-central Jamaica. Zoological Journal of the Linnean Society 87: 367-398.
  5. ^ Sagdidae. Discover Life, accessed 6 December 2008.

External links[edit]