The black slug, or llanega negra, is the older cousin of the white slug, and in this case, it is characterized by having a very viscous brown hat in humid periods and a thickened foot in the central part with a mottled striped color. It is a delicious species that can be found in the mycological preserve until well into the winter, always mycorrhizating with conifers, among them, the Scots pine or Scots pine. Culinarily it is a very interesting mushroom, since the whole stem can be used.

