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First record of the predatory semi-slug Daudebardia rufa (Draparnaud, 1805) from the UK (Eupulmonata: Daudebardiidae)
... Iron ore was imported from the Basque Country (including the western Pyrenees) to South Wales from the 1860s, reaching a large scale by the early twentieth century (Flinn, 1955). This has been suggested as a potential route of introduction for some of these (Rowson et al. 2014;Owen et al. 2016). Since being detected in South Wales, D. rufa has been found in a river valley in North Wales, and in woodlands in both Northern Ireland and the Republic of Ireland (see Rowson 2021Rowson , 2023. ...
Semilimax pyrenaicus has been known in Ireland for over 100 years, but not previously found in Britain, despite widespread recording of two other vitrinid species. Through fieldwork and the online recording system iRecord, large S. pyrenaicus populations were found in two river valleys, one in the South Wales Valleys (the Cynon Valley) the other in Snowdonia / Eryri National Park (Ceunant Cynfal). Though climatically similar, the two have very different histories, the Cynon Valley being a broad valley heavily deforested and modified by industry and settlement, and Ceunant Cynfal being a narrow gorge with remnants of ancient Atlantic Oak Woodland. In Britain, S. pyrenaicus appears to be a recent arrival (earliest record 2019) and seems likely to spread, perhaps aided by passive dispersal along rivers.
... 20. Daudebardia rufa, a semi-slug, was first recorded in the UK from clay pits near Caerphilly in south Wales (Rowson et al., 2016). It is spreading but very localized in occurrence. ...
A revised and updated list of non-marine Mollusca in Britain and Ireland based on Anderson (2005).
Changes to Anderson (2005) are predicated upon recently published molecular studies.
... The park harbours a large collection of old trees, has humid areas and several low maintenance areas where leaf litter can accumulate. Interestingly, a population of its closely resembling congener D. rufa (Draparnaud, 1805) has recently been found in the UK (Owen et al. 2016). Although the authors expressed uncertainty whether D. rufa is an overlooked native species or an introduced species, our find of D. brevipes in Ghent shows that generally rare Daudebardia spp. ...
In this note we report a find of Daudebardia brevipes (Draparnaud, 1805) in the botanical garden of Ghent, Belgium. This constitutes the first record of D. brevipes outside its native range. Our find in a greenhouse environment suggests that the species has been introduced with foreign plant material.
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