Its origin is not fully clear but it may come from Italy (details in Reise et al. 2011).
D. invadens is a small slug (length up to 40 mm) of much variable coloration – from creamy-brown or brown to black, often with darker spots. The species cannot be mistaken for any other Deroceras species because of the distinct appearance of its penis: horseshoe-shaped penis has a tuft of long processes of the penial gland.
D. invadens inhabits open cultural landscape (fields, fallows, gardens and parks), ruderal environments and is often found in greenhouses (e.g. Wiktor 2001).
D. invadens inhabits open cultural landscape (fields, fallows, gardens and parks), ruderal environments and is often found in greenhouses (e.g. Wiktor 2001).
The unique, horseshoe-shaped penis of the slug Deroceras invadens (photo J.M.C. Hutchinson). |
The worldwide occurrence of the slug Deroceras invadens (© J.M.C. Hutchinson, 2017)
Distribution map of Deroceras invadens in Slovakia (last updated 11 Sept 2020).
References
[1] Dvořák L., Čejka T. & Horsák M. 2003. First record of Deroceras panormitanum (Gastropoda, Agriolimacidae) from Slovakia. Biologia, 58(5): 917–918.
[2] Reise H., Hutchinson J., Schunack S. & Schlitt B., 2011. Deroceras panormitanum and congeners from Malta and Sicily, with a redescription of the widespread pest slug as Deroceras invadens n. sp. Folia malacologica, 19(4).
[3] Wiktor A. 2001. Deroceras (Deroceras) panormitanum (Lessona et Pollonera, 1882) – a new introduced slug species in Poland (Gastropoda: Pulmonata: Agriolimacidae). Folia Malacologica, 9(3).
[1] Dvořák L., Čejka T. & Horsák M. 2003. First record of Deroceras panormitanum (Gastropoda, Agriolimacidae) from Slovakia. Biologia, 58(5): 917–918.
[2] Reise H., Hutchinson J., Schunack S. & Schlitt B., 2011. Deroceras panormitanum and congeners from Malta and Sicily, with a redescription of the widespread pest slug as Deroceras invadens n. sp. Folia malacologica, 19(4).
[3] Wiktor A. 2001. Deroceras (Deroceras) panormitanum (Lessona et Pollonera, 1882) – a new introduced slug species in Poland (Gastropoda: Pulmonata: Agriolimacidae). Folia Malacologica, 9(3).
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