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Stylommatophora is an order [3] of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs . Stylommatophorans lack an operculum , but some close their shell apertures with temporary "operculum" ( epiphragm ) made of calcified mucus.
Arion fasciatus is in many ways similar to most other stylommatophoran slugs. They are hermaphroditic.They have a head, mantle, and foot.There are two sets of retractable tentacles on their heads: the upper pair have light-sensing organs, and the lower two are used to smell.
Limacus flavus, known commonly as the cellar slug, the yellow slug, or the tawny garden slug, is a medium to large species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Limacidae.
Stylommatophora is a very diverse group that includes the majority of land snails and slugs. There are 187 species and two subspecies in the order Stylommatophora assessed as endangered. There are 187 species and two subspecies in the order Stylommatophora assessed as endangered.
It is an opening in the right side of the mantle of a stylommatophoran snail or slug. Air enters through the pneumostome into the animal's single lung , the air-filled mantle cavity. [ 1 ] Inside the mantle cavity the animal has a highly vascularized area of tissue that functions as a lung.
Ambigolimax valentianus (also known as Lehmannia valentiana) is a species of terrestrial slug, a pulmonate gastropod mollusc in the family Limacidae. [6]It has spread very widely around the world, especially in greenhouses, where it can be a pest; in warmer climates it has often then spread outdoors.
The Bouchet et al. 2017 [1] nomenclator provides an up to date system of Helicoidea. The system is in some parts preliminary, as the authors relied on unpublished (as of 2023) phylogenomic study, which did not include all New World taxa.
Arion fuscus, also known as the "dusky arion", is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs. Arion subfuscus (Draparnaud, 1805) is considered by some authors to be a partial synonym for Arion fuscus .