Some time ago I posted a note on a mysterious snail found in southern Brazil, supposedly Plekocheilus aff. rhodocheilus (Reeve, 1849) (here). ‘The snail has gotten a tail’, so to speak, as the original audio fragment has been analysed and another case of sound production in land snails turned up, shedding light on this seemingly forgotten topic.
Many thanks are due to Germano Woehl jr. for sharing the original audio file.
It would be interesting to further investigate e.g. the relationships between size of the species and sound to be made.