| Species | Arion rufus (Red Slug, Large Red Slug) |
| Species aggregate | Arion ater agg. (black slugs, orange slugs) |
| Genus | Arion (a genus of slugs) |
| Family | ARIONIDAE (roundback slugs) |
| Order | PULMONATA (slugs and snails) |
| Class | GASTROPODA (slugs and snails) |
| Phylum | MOLLUSCA (slugs, snails, bivalves, octopus, sea slugs) |
| Superphylum | LOPHOTROCHOZOA (molluscs and relatives) |
| Clade | Bilateria (bilaterally symmetrical animals) |
| Subkingdom | EUMETAZOA (metazoans) |
| Kingdom | ANIMALIA (animals) |
| Domain | Eukaryota (eukaryotes) |
| Life | BIOTA (living things) |
| Records of Arion rufus (Red Slug, Large Red Slug) : | ||||
| 1: Arion rufus (Red Slug, Large Red Slug) | ||||
| 7 Jun 2014 | OSGR: SU00 | 50° 50’ N, 1° 60’ W | Vice County: Dorset (VC 9) | England |
| in garden | ||||
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| 2: Arion rufus (Red Slug, Large Red Slug) | ||||
| 4 Sep 2004 | OSGR: SU56 | 51° 20’ N, 1° 10’ W | Vice County: Berks (VC 22) | England |
| courting pair in garden | ||||
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| 3: Arion rufus (Red Slug, Large Red Slug) | ||||
| 14 Oct 2002 | OSGR: SU56 | 51° 20’ N, 1° 10’ W | Vice County: Berks (VC 22) | England |
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Arion rufus (Red Slug, Large Red Slug) may be included in identification literature listed under the following higher taxa:
 NBN (data.nbn.org.uk)
has a distribution map for Arion rufus (Red Slug, Large Red Slug)
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 BioInfo (www.bioinfo.org.uk)
has 1 host/parasite/foodplant and/or other relationships for Arion rufus (Red Slug, Large Red Slug)
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A large black, brown, grey, orange or dull yellowish slug.
The fringe generally contrasts strongly with the rest of the upper surface, ie bright orange or red against a brown or black body. It also usually has reddish pigment on both sides below the mantle and on the sole near the head.
The lineolations may extend onto the sole, sometimes right across, but this character is not always present. The only other species in the group with this character is A. ater where some dark-soled morphs have lineolations but this is rare.
It occasionally sways from side to side in the contracted state when firmly stroked from head to tail.
Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under the above Creative Commons Licence.
Photographs from other photographers are used with permission but not included under the above CC licence.