Limnaeus opacus, " Ziegler "

Vinarski, Maxim V., 2016, Annotated type catalogue of lymnaeid snails (Mollusca, Gastropoda) in the collection of the Natural History Museum, Berlin, Zoosystematics and Evolution 92 (1), pp. 131-152 : 143

Taxon classification Animalia Hygrophila Lymnaeidae

opacus "Ziegler" Fig. 62

Limnaea opaca Dupuy 1851: 473.

Limnaeus pereger var. opacus von Gallenstein 1852: 43.

Limnaea peregra var. opaca Moquin-Tandon 1855: 468.

Material.

Two shells collected in Carniolia and kept in ZMB under accession number 109755. The largest of two shells is 10.0 mm height.

Current taxonomic allocation.

Possibly a synonym of Radix (Peregriana) peregra auct. = Radix labiata sensu Falkner et al. 2002.

Remark.

Though a few authors of the 19th century used this taxon name ( Dupuy 1851; von Gallenstein 1852; Moquin-Tandon 1855), I could not trace the source where it was described originally. Perhaps, it should be considered as one of those numerous "manuscript names" attributed to the authorship of Ziegler (see also comment to Limnaeus compactus above).