''Alloionema'' is a genus of terrestrial

nematodes The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (he ...

within the family Alloionematidae. Members of this genus often

parasitize Parasitism is a close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The ento ...

gastropods Gastropods (), commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and from the land. Ther ...

, such as ''A. appendiculatum'' parasitizing ''

Arion vulgaris The Spanish slug (''Arion vulgaris'', but formerly widely referred to as ''Arion lusitanicus'' owing to a misidentification) is an air-breathing land slug, a terrestrial molluscs, terrestrial pulmonate gastropod mollusc, mollusk in the family Ari ...

'' in

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

where the

slug Slug, or land slug, is a common name for any apparently shell-less Terrestrial mollusc, terrestrial gastropod mollusc. The word ''slug'' is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced ...

is invasive.

Species

* '' Alloionema appendiculatum'' Schneider, 1859 * '' Alloionema luofuensis'' Huang, Li & Zhao, 2016 * '' Alloionema similis'' Holovachov, Bostrom, De Ley, McDonnell, Alvaredo, Paine & De Ley, 2016

References

{{Taxonbar, from=Q18520184 Rhabditida genera Parasites of molluscs Rhabditida