“Scratch and flotate” method to collect shells of subterranean species. A–B scratching out fine granulate soil material with handrakes C separating shells from soil particles by flotation D cursory visual inspection of the floated fraction E Storing the floated material in polyamide knee-sock.

  Part of: Páll-Gergely B, Deli T, Erőss ZP, Reischütz PL, Reischütz A, Fehér Z (2018) Revision of the subterranean genus Spelaeodiscus Brusina, 1886 (Gastropoda, Pulmonata, Spelaeodiscidae). ZooKeys 769: 13-48. https://doi.org/10.3897/zookeys.769.25258