Helix arbustorum var. marmorata Roffiaen 1868

Helix arbustorum var. marmorata Roffiaen, 1868 Helix arbustorum var. marmorata Roffiaen, 1868: 70. Type material. Not located. Type locality. Switzerland: Weesen. “ Se trouve en diverses localités, n’est pas rare à Wesen ” (Roffiaen, 1868: 70). Taxonomic status. Junior synonym of Arianta arbustorum (Linnaeus, 1758). Discussion. This variety was described to denote specimens lacking the dark spiral bands seen on the shells of typical Arianta arbustorum. As for the case of the yellow shells of the variety icterica above, this is part of the common colour polymorphism known in A. arbustorum (Cook and King 1966; Grime and Blythe 1969; Burla and Stahel 1983; Burla 1984; von Proschwitz et al. 2023). Thus, even without having access to type material, Roffiaen’s (1868) description, along with current knowledge on A. arbustorum, is sufficient to surmise that A. A. marmorata is synonymous with A. arbustorum.