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Reise, H., Schwarzer, A.-K., Hutchinson, J. M. C. & Schlitt, B. (2020). Genital morphology differentiates three subspecies of the terrestrial slug Arion ater (Linnæus, 1758) s.l. and reveals a continuum of intermediates with the invasive A. vulgaris Moquin-Tandon, 1855. Folia Malacologica. 28(1):1-34.
Reise, H., Schwarzer, A.-K., Hutchinson, J. M. C. & Schlitt, B. (2020). Genital morphology differentiates three subspecies of the terrestrial slug Arion ater (Linnæus, 1758) s.l. and reveals a continuum of intermediates with the invasive A. vulgaris Moquin-Tandon, 1855. Folia Malacologica. 28(1):1-34.