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Giusti, F., Lesicki, A., Benocci, A. Pieńkowska, J.R. & Manganelli, G. (2021). Weltersia obscura, a new slug from the island of Montecristo (Tuscan Archipelago, Italy): a hitherto undiscovered endemic or a recent alien? (Mollusca, Pulmonata, Limacidae). Systematics and Biodiversity. 19(7): 648-664.