Succineidae

Succineidae are a family of small to medium-sized, air-breathing land snails (and slugs), terrestrial pulmonate gastropod molluscs in the superfamily Succineoidea.

They are commonly called amber snails because their thin fragile shells are translucent and amber-colored. They usually live in damp habitats such as marshes.

Succineidae is the only family in the superfamily Succineoidea.

The soft parts of the animal appear to be too large for the shell.

Anatomy
In this family, the number of haploid chromosomes varies greatly. The most common totals are less than 10, and also lies between 21 and 25, but other values are also possible (according to the values in this table).

Taxonomy
The family Succineidae contains two subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):
 * Succineinae Beck, 1837 - synonyms: Hyalimacinae Godwin-Austen, 1882; Oxylomatinae Schileyko & I. M. Likharev, 1986
 * Catinellinae Odhner, 1950

Genera
Genera in the family Succineidae include:
 * † Eoquickia Harzhauser & Neubauer in Harzhauser et al., 2016
 * † Papyrotheca Brusina, 1893
 * † Suratia Hamilton-Bruce & Kear, 2010


 * Catinellinae Odhner, 1950
 * Catinella Pease, 1870
 * Indosuccinea Rao, 1924
 * Mediappendix Pilsbry, 1948
 * Quickella C. Boettgger, 1939
 * Quickia Odhner, 1950


 * Oxylomatinae Schileyko & Likharev, 1986
 * Oxyloma Westerlund, 1885


 * Succineinae Beck, 1837
 * Austrosuccinea Iredale, 1937
 * Boninosuccinea Habe, 1956
 * Camptonyx Benson, 1858
 * Helisiga Lesson, 1831
 * Hyalimax H. Adams & A. Adams, 1855
 * † Laxisuccinea Cooke, 1921
 * Lithotis W. T. Blanford, 1863
 * Neosuccinea Matekin, 1956
 * Novisuccinea Pilsbry, 1948
 * Omalonyx d'Orbigny, 1837
 * Pamirsuccinea Schileyko & Likharev, 1986
 * Spirancinea Iredale, 1945
 * Succinea Draparnaud, 1801
 * Succinella Mabille, 1871


 * Nomen nudum:
 * Papusuccinea Iredale, 1941


 * Synonyms:
 * Subfamily Hyalimacinae Godwin-Austen, 1882 : synonym of Succineinae H. Beck, 1837
 * Subfamily Oxylomatinae Schileyko & I. M. Likharev, 1986 : synonym of Succineinae H. Beck, 1837
 * Amphibina W. Hartmann, 1821 : synonym of Succinea Draparnaud, 1801
 * Amphibulima Gistel, 1848 : synonym of Succinea Draparnaud, 1801 (Invalid: unnecessary substitute name for Succinea; also a junior homonym of Amphibulima Lamarck, 1805 )
 * Arborcinea Iredale, 1937 : synonym of Succinea Draparnaud, 1801
 * Brachyspira L. Pfeiffer, 1855 †: synonym of Succinea (Brachyspira) L. Pfeiffer, 1855 represented as Succinea Draparnaud, 1801
 * Cerinasota Iredale, 1939 : synonym of Succinea Draparnaud, 1801
 * Cochlohydra A. Férussac, 1821 : synonym of Succinea Draparnaud, 1801
 * Homalonyx Ancey, 1881 : synonym of Omalonyx d'Orbigny, 1838 (unjustified emendation)
 * Hydrophyga Lindholm, 1927 : synonym of Succinella Mabille, 1871
 * Hydrotropa Lindholm, 1927 : synonym of Oxyloma Westerlund, 18854* Lucena Hartmann, 1821: synonym of Succinea Draparnaud, 1801
 * Neohyalimax Simroth, 1896 : synonym of Omalonyx d'Orbigny, 1838
 * Succinastrum J. Mabille, 1871 : synonym of Succinea Draparnaud, 1801
 * Succinoides Schileyko, 1967 : synonym of Oxyloma (Succinoides) Schileyko, 1967 represented as Oxyloma Westerlund, 1885
 * Tapada S. Studer, 1820 : synonym of Succinea Draparnaud, 1801
 * Truella Pease, 1871 : synonym of Succinea Draparnaud, 1801

Conservation status
The World Conservation Union (IUCN) considers five species or subspecies of ambersnail as threatened with extinction, and a further three species are categorized as "data deficient" which were previously considered Vulnerable or Extinct, and two species are listed as Near Threatened.

Threatened species

 * Oxyloma kanabense - Kanab Ambersnail, Critically Endangered
 * Succinea piratarum - Endangered
 * Succinea quadrasi - Endangered
 * Boninosuccinea ogasawarae - Vulnerable
 * Boninosuccinea punctulispira - Vulnerable

Assigned other IUCN categories

 * Catinella arenaria - Sandbowl Snail, Near Threatened
 * Succinea sanctaehelenae - Near Threatened
 * Succinea guamensis - Data Deficient, previously considered Extinct
 * Succinea chittenangoensis - Chittenago Ovate Ambersnail - Data Deficient, previously Vulnerable
 * Succinea philippinica - Data Deficient, previously Vulnerable