Chestnut Slug

Deroceras invadens

Chestnut Slug (Deroceras invadens)

Also called the ‘Brown Field Slug’, this has a translucent grey-brown body, although it may be darker. The mantle is usually tinged chestnut, and it usually, but not always, has a pale ring around its respiratory pore. It has a very short keel. The mucus is colourless. Quite a fast-moving slug. Length 25 to 35mm.

This slug can be a significant pest in gardens, allotments and nurseries and will eat many types of plants and seedlings.

Found in woods, but especially parks and gardens. Discovered under logs, stones and paving. Introduced to Britain and Ireland in the early 1930s, and has spread rapidly since 1975 and has become common and widespread.

Photograph taken November 2012, rear garden, Staffordshire. Nikon Coolpix P500. © Pete Hillman 2012.