Work

Helix ruderata var. viridana Roffiaen 1868

Year: 2025

Type: other

Abstract: Helix ruderata var. viridana Roffiaen, 1868 Helix ruderata var. viridana Roffiaen, 1868: 68. Type material. Not located. Type locality. Switzerland: Handeck (Handegg). “ La Handeck ” (Roffiaen 1868: 68). Taxonomic status. Junior synonym of Discus ruderatus (Hartmann, 1821). Discussion. This variety was described to allocate specimens for which the single conchological character noted by Roffiaen (1868) was the “ pale greenish colour ”. The shell of Discus ruderatus is known to typically to be light brown to reddish brown (Welter-Schultes 2012), though paler yellowish and greenish brown specimens are also common (Kerney et al. 1979; Wiese 2014). Furthermore, the type locality of this variety is within the known distribution of D. ruderatus in Switzerland (Turner et al. 1998), and Roffiaen (1868) himself mentioned “ typical ” D. ruderatus occurring in the same place. Thus, even without access to type material, it can be surmised that Helix ruderata viridana is very likely a junior synonym of D. ruderatus.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.15482714

Authors: Salvador, Rodrigo Brincalepe, d'Udekem d'Acoz, Cedric, Vinarski, Maxim V., Samyn, Yves, Tomotani, Barbara Mizumo

Institutions: University of Helsinki, Finnish Museum of Natural History, Institute of Natural Sciences, St Petersburg University, UiT The Arctic University of Norway

Language: English

Topic: Mollusks and Parasites Studies

Subfield: Insect Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: green

OpenAlex ID: W6968549287

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