Boettgerilla pallens




Boettgerilla pallens Simroth, 1912

Common Name



The wormslug is very narrow in appearance. It has the ability to measure up to 60 mm when fully extended, although individuals measuring between 30-40 mm are more common. The slug's color varies form a pale yellow to grey to blue-grey. In most individuals the back, mantle, head and tentacles are slightly darker than the rest of the body. The sole of the foot is a pale yellow-grey and produces a clear mucus. The keel of this slug extends from the tip of the tail to the posterior edge of the mantle. The juveniles of this species are much paler than the adults and in some cases may be pale grey-white.

Native Range

Southeastern Europe


North America:

  • Canada: British Columbia

South America: Columbia



The wormslug can be found in greenhouses, gardens, recreational areas, natural areas and nurseries. It is often found in the soil, and is capable of burrowing as deep as 60 cm. It may also occupy burrows made by earthworms. The diet of this slug includes fungi, detritus material, carrion and eggs of other terrestrial molluscs. This slug also consume plant roots, and are thus an important nursery and greenhouse pest.


  • Boettgerilla vermiformis Wiktor, 1959. Simroth 1912: 55, pl. 3, fig. 50, pl. 8, fig. 32


Anderson 2005; Grimm et al. 2009; Gunn 1992; Horsak et al. 2004; Kantor et al. 2009; Kerney et al. 1979; Reise et al. 2000

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