Last weekend I took a photo of this cave-dwelling snail in a northern peruvian cave (1200 metres above sea level). Could you please help me to identify the Genus and Family? Thank you very much.
The only species of terrestrial snails that resemble your species belong to the Family Polygyridae Pilsbry, 1895, which became a Subfamily by (Bouchet & Rocroi, 2005), also resembles a species of Planorbidae but these are Freshwater snails. The Polygyridae family does not appear to be distributed in Peru, it is certainly a new species belonging to a new genus. The ecosystem from which it comes (in a cave at 1200 m) is undoubtedly interesting, the specimen is albino. I advise you to go and get other specimens and keep me in mind if you want to describe the species. A malacologist, Roberto Ardovini.
The Polygyridae are an option, another one to look up may be Scolodontidae, which seem to be more common in Peru.
The photo doesn't provide enough information for a determination, but it doesn't look like a polygyrid to me--the small size and (apparently) very large umbilicus in a "flat" snail don't fit with that group. I agree that Scolodontidae would be a good possibility on biogeographical grounds, such as Hirtudiscus and no doubt others.
Hi, this is most likely a Scolodontidae. The low spire, transparant shell, many whorls and large umbilicus suggest affiliation with Systrophia or Zilchistrophia. If it also has an incision in the parietal angle of the aperture it might be more closely related to Drepanostomella. Did you collect it?
Hi, I agree with what has been said so far. Appears to be Systrophia (ortoni group)
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