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Photo by Scott Loarie, no rights reserved
pillar point CA (Google, OSM) Details Hide details
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Comments & Identifications

477 thumb
angular unicorn - Photo no rights reserved
loarie's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by loarie over 5 years ago (Flag)
933 thumb
angular unicorn - Photo no rights reserved
invertboy's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by invertboy over 4 years ago (Flag)
477 thumb
Angular unicorn - Photo (c) Femorale, some rights reserved (CC BY-NC)
loarie's ID: Angular unicorn (Acanthinucella spirata) Added as part of a taxon swap
Posted by loarie almost 3 years ago (Flag)
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Angular unicorn - Photo (c) Femorale, some rights reserved (CC BY-NC)
invertboy's ID: Angular unicorn (Acanthinucella spirata) Added as part of a taxon swap
Posted by invertboy almost 3 years ago (Flag)
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Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
invertzoo's ID: Spotted Unicorn (Acanthinucella punctulata)
Posted by invertzoo almost 2 years ago (Flag)
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It is very easy to confuse these two species. But here is what typical Acanthina spirata really looks like, much higher-spied, white aperture, very angular outline, not nearly as rounded as A. punctulata:

http://www.jaxshells.org/2005yy.htm

Posted by invertzoo almost 2 years ago (Flag)
477 thumb
Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
loarie's ID: Spotted Unicorn (Acanthinucella punctulata)
Posted by loarie almost 2 years ago (Flag)
477 thumb

thank you

Posted by loarie almost 2 years ago (Flag)
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You are welcome. I have made the same error myself and a lot of people confuse the two species, but I think after a lot of studying that I now understand the differences between them. Where I used to live near San Diego, A. spirata was very common and A. punctulata was very rarely seen. In central and northern California the opposite seems to be true.

Posted by invertzoo almost 2 years ago (Flag)
933 thumb
Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
invertboy's ID: Spotted Unicorn (Acanthinucella punctulata)
Posted by invertboy over 1 year ago (Flag)
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Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
loarie's ID: Spotted Unicorn (Acanthinucella punctulata)
Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
Community ID: Spotted Unicorn (Acanthinucella punctulata)
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Observation by Scott Loarie
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