Deroceras panormitanum | |
---|---|
Two individuals of Deroceras panormitantum from different sites on Sicily (identity checked by observing matings) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Order: | Stylommatophora |
Family: | Agriolimacidae |
Genus: | Deroceras |
Species: | D. panormitanum |
Binomial name | |
Deroceras panormitanum | |
Synonyms | |
Deroceras pollonerae Contents |
Deroceras panormitanum is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusc in the family Agriolimacidae.
Deroceras panormitanum sensu stricto ("in the strict sense") occurs predominantly only on Sicily and Malta. [2] Before 2011, [3] this name was also applied to what turned out to be a distinct species, Deroceras invadens , a species which has spread around the world and is often a pest.
This species is not listed in the IUCN red list. [4]
Deroceras panormitanum was described from Palermo in Sicily. [1] It is now widely accepted [3] [5] [6] that Deroceras pollonerae also described from Palermo, [7] Deroceras caruanae described from Valletta on Malta, [8] and Deroceras dubium from Malta [9] are the same species. Recently Reise et al. (2011) [3] also synonymised Deroceras giustianum from NW Sicily [10] but considered the status of further similar taxa from this general region as uncertain. Now that Deroceras invadens has been recognised as distinct, the morphological variation within Deroceras panormitanum sensu stricto is not as great as once thought.
The skin and flesh of Deroceras panormitanum is watery and fairly transparent. The skin colour varies between pale grey, brown, and black. The mucus is colourless. Externally, Deroceras panormitanum is impossible to distinguish from Deroceras invadens and Deroceras golcheri, which occur in the same islands, and from a variety of other Deroceras species occurring elsewhere. [3] [6]
Internally the penis of Deroceras panormitanum has two side pockets (penial caecum and penial lobe), as in Deroceras invadens but unlike in Deroceras golcheri or related forms on Sicily. [3] In Deroceras panormitanum the caecum is more tapering and pointed than in Deroceras invadens. Whereas in Deroceras invadens the retractor muscle attaches directly to a point on the penis between the caecum and lobe, in Deroceras panormitanum it attaches first to the lobe. Also the penial glands often appear more knobbly than in Deroceras invadens. And inside the penis, between the distal and proximal parts, is a small flap that is absent in other species.
Reise et al. (2011) [3] detail the mating behaviour and compare it with that of Deroceras invadens and Deroceras golcheri.
This species is widespread on Sicily and Malta [3] [11] but has now been recorded also at two sites in South Wales, at one site in Ireland, at one site in northern Italy, on the Mediterranean island of Mallorca, at two neighbouring sites on Madeira, and on produce originating from the Azores. [2] [12] [13] [14]
Limax is a genus of air-breathing land slugs in the terrestrial pulmonate gastropod mollusk family Limacidae.
Deroceras praecox is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae.
Deroceras laeve, the marsh slug, is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae.
Agriolimacidae is a family of small and medium-sized land slugs, or shell-less snails, terrestrial pulmonate gastropod mollusks.
Deroceras is a taxonomic genus of small to medium-sized air-breathing land slugs in the family Agriolimacidae.
Limacidae, also known by their common name the keelback slugs, are a taxonomic family of medium-sized to very large, air-breathing land slugs, terrestrial pulmonate gastropod molluscs in the superfamily Limacoidea.
Geomalacus is a genus of large air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the family Arionidae, the roundback slugs.
Tandonia is a genus of air-breathing, keeled, land slugs. These are shell-less terrestrial gastropod mollusks in the family Milacidae.
Deroceras rodnae is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae.
Trigonochlamydidae is a family of air-breathing land slugs, terrestrial gastropod molluscs in the clade Eupulmonata.
Milacidae is a family of air-breathing, keeled, land slugs. These are shell-less terrestrial gastropod mollusks in the superfamily Parmacelloidea.
Deroceras juranum is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae.
Deroceras invadens is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusc in the family Agriolimacidae. Until 2011, this widely distributed species was known as Deroceras panormitanum, and earlier as Deroceras caruanae or Agriolimax caruanae, but Reise et al. (2011) showed that these names refer to a distinct species of similar external appearance known at that time only from Sicily and Malta. Consequently, although the more widespread species was already well known, it then had to be redescribed under the new name of D. invadens. Genetic evidence has indicated that D. invadens is native in southern Italy, including parts of Sicily, and possibly parts of central Italy. Elsewhere it has been introduced, predominantly within the last 100 years, but its spread has been constrained by cold winter temperatures.
Carlo Pollonera was an Italian painter, particularly of landscapes, and also an important malacologist.
Ambigolimax is a genus of air-breathing land slugs in the family Limacidae, the keelback slugs. There is still ongoing disagreement whether it is more appropriate to consider Ambigolimax as merely a subgenus of Lehmannia; the evidence for splitting them is phylogenetic trees constructed on the basis of DNA sequences.
Deroceras cecconii is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusc in the family Agriolimacidae. Although it was long considered a synonym of Deroceras panormitanum, a 2020 article establishes that it is a distinct species widely distributed in the central part of the Italian peninsula. It is also known as an introduction at one site in eastern Germany.
Ariunculus isselii is a species of terrestrial slug belonging to the family Arionidae. Previously it has been placed in the genus Arion or in its own genus Ichnusarion; the latter is more often treated as a subgenus.
{{cite book}}
: CS1 maint: location missing publisher (link)Media related to Deroceras panormitanum at Wikimedia Commons