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European red slug

The European red slug, Arion rufus L, is common to sites in the Pacific Northwest.

It can be distinguished from other slugs by the placement of the respiratory pore before the mid-point of the mantle; a back without a keel; and heavily wrinkled skin. It is generally 70-100 mm in length and variable in color ranging from reddish, orange, brown or black. The foot fringe is mostly red with stripes. The optics tentacles are dark (Godan, 1983).

Several other Arion species can be found in the Pacific Northwest including A. circumscriptus Johnston, grey garden slug ; A. ater L., the European black slug; A. hortensis Ferussac, garden slug; and A. intermedius Normand, hedgehog slug (Gordon, 1994).

image of European black slug
Photo: Rosetta, OSU
E. red slug profile
Photo: Rosetta, OSU
A. rufus
Photo: Rosetta, OSU
Arion rufus
Photo: Rosetta, Oregon State University
A. rufus
Photo: Rosetta, OSU
European red slug eating Arum italicum
European red slug eating
Photo: Rosetta
Mating European red slugs
mating Arion rufus
Photo: Rosetta
Website editor:
Robin Rosetta
Page last modified 11/28/12

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