Punctum (gastropod)

Punctum

Punctum minutissimum

Apical view of a shell of Punctum pygmaeum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra
Superfamily:	Punctoidea
Family:	Punctidae
Genus:	Punctum Morse, 1864^[1]

Punctum is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the family Punctidae, the dot snails.

Species

The genus Punctum includes the following species:

The type species is Helix minutissima Lea, 1841.

Punctum azoricum De Winter, 1988^[2]
Punctum blandianum Pilsbry, 1900
Punctum californicum Pilsbry, 1898
Punctum minutissimum I. Lea, 1841 - but Helix minutissima may be considered as a synonym of Punctum pygmaeum^[3]
Punctum pallidum Connolly, 1922^[4]
Punctum pygmaeum (Draparnaud, 1801)^[5]^[2] - type species
Punctum randolphi Dall, 1895
Punctum ugandanum (E. A. Smith, 1903)^[4]

This genus is found throughout the Holarctic ecozone, and also in South Africa and Mexico. ^[6]

^ Morse E. S. 1864. Observations on the terrestrial Pulmonifera, including a catalogue of all species of terrestrial and fluviatile Mollusca known to inhabit the state. Journal of the Portland Society of Natural History 1 (1): 1-63, Pl. I-II [= 1-2 ], 3-10.
^ ^a ^b "Species in genus Punctum" (n=2). AnimalBase, accessed 5 July 2011.
^ "Synonyms of Helix pygmaea. accessed 5 July 2011.
^ ^a ^b Wronski T. & Hausdorf B. (2010). "Diversity and body-size patterns of land snails in rain forests in Uganda". Journal of Molluscan Studies 76(1): 87-100. doi:10.1093/mollus/eyp048.
^ Draparnaud J. P. R. 1801. Tableau des mollusques terrestres et fluviatiles de la France. pp. [1-2], 1-116. Montpellier, Paris. (Renaud; Bossange, Masson & Besson).
^ Pilsbry H.A. 1948. Land Mollusca of North America (North of Mexico). The Academy of Natural Sciences of Philadelphia, Monographs, 3, vol. 2 part 2: 521-1113.