#4587 · 🐌 snails, slugs & other molluscs
Two lipped door snail
🇳🇱 Grote clausilia ·Alinda biplicata
📍 Westwijk, 1187 Amstelveen, Nederland
📍 Velp, Nederland
📍 Voorburg, Nederland
📍 Nijmegen, Valkhof, 6511 TB Nijmegen, Nederland
📍 8218 AA Lelystad, Nederland
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © H. Zell · CC BY-SA 4.0
- 2. © Igor Balashov · CC BY 4.0
- 3. © Jakob Fahr · CC BY-NC 4.0
- 4. © Jakob Fahr · CC BY-NC 4.0
- 5. © Jakob Fahr · CC BY-NC 4.0
- 6. Westwijk, 1187 Amstelveen, Nederland:© Mathijs Zonneveld · CC BY 4.0
- 7. Velp, Nederland:© 05gi02el03 · CC BY-NC 4.0
- 8. Voorburg, Nederland:© Rob Westerduijn · CC BY-NC 4.0
- 9. Nijmegen, Valkhof, 6511 TB Nijmegen, Nederland:© Lars Willighagen · CC BY 4.0
- 10. 8218 AA Lelystad, Nederland:© Hybodus · CC BY-NC 4.0
what is it?
Alinda biplicata , also known as Balea biplicata , common name the two lipped door snail or Thames door snail , is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- Spotted 237 times in the Netherlands on iNaturalist: the #19 most seen of the snails, slugs & other molluscs in NL.
- 2,970 observations worldwide on iNaturalist.
fact sheet
- English
- Two lipped door snail
- Nederlands
- Grote clausilia
- scientific name
- Alinda biplicata
- class
- Gastropoda
- order
- Stylommatophora
- family
- Clausiliidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 237
- sightings in Europe
- 1,347
- sightings worldwide
- 2,970
- GBIF records in NL
- 9,903
- weight
- —
- length
- —
- lifespan
- —
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Clausiliidae
Sources: iNaturalist taxon 1050998, Wikidata Q41169308, GBIF 4568664, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.