Tandonia rustica

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Tandonia rustica
Tandonia rustica (Millet, 1843) by Francisco Welter Schultes, 22-07-2007.jpg
Photo:Francisco Welter Schultes
Slug shells of Tandonia rustica (Millet, 1843) by Francisco Welter Schultes, 04-1974.jpg
Slug shells of Tandonia rustica.Photo:Francisco Welter Schultes
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
clade limacoid clade
Superfamily: Parmacelloidea
Family: Milacidae
Genus: Tandonia
Species: T. rustica
Binomial name
Tandonia rustica
(Millet, 1843)

Limax rustica Millet, 1843
Milax sowerbii var. rustica

Tandonia rustica is a species of air-breathing, keeled, land slug, a shell-less terrestrial gastropod mollusk in the family Milacidae.


70 mm.- 100 mm. long whitish In colour creamy or reddish to yellowish grey with numerous black dots . The mantle is 40% of body length (preserved specimens) . The mantle is granular with a deep but not conspicuous horseshoe-shaped groove with black streaks. The breathing pore has a pale rim. The keel is yellowish to white.The sole is cream.

The penis and epiphallus form a single long cylindrical organ: penis with a swelling anteriorly, inside with a richly ornamented papilla, epiphallus obviously longer than penis. ,The vas deferens opens symmetrically, the spermatheca is elongate with a sharp pointed end, its duct slightly shorter and with a swelling half-way.The vagina is not much wider than the oviduct, accessory glands are compact duct-like canals, surrounding and opening to the anterior end of the vagina, The atrium is short.(Francisco Welter Schultes)


This is a keeled slug.


This slug is native to Europe.

This species has not yet become established in the USA, but it is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce. Therefore, it has been suggested that this species be given top national quarantine significance in the USA.[3]


Deciduous and mixed forests on mountain slopes with limestone rock rubble, also in open habitats on calcareous soils.


  1. ^ 2007 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 13 August 2008.
  2. ^ "Anemoon > Flora en Fauna > Soorteninformatie". www.anemoon.org. 
  3. ^ Cowie R. H., Dillon R. T., Robinson D. G. & Smith J. W. (2009). "Alien non-marine snails and slugs of priority quarantine importance in the United States: A preliminary risk assessment". American Malacological Bulletin 27: 113-132. PDF.

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