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Photo © Scott Loarie, some rights reserved
pillar point CA (Google, OSM) Details Hide details
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Comments & Identifications

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angular unicorn - Photo (c) Scott Loarie, some rights reserved (CC BY)
loarie's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by loarie about 5 years ago (Flag)
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angular unicorn - Photo (c) Scott Loarie, some rights reserved (CC BY)
invertboy's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by invertboy almost 4 years ago (Flag)
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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 about 2 years ago (Flag)
933 thumb
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 about 2 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 over 1 year 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 over 1 year 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 over 1 year ago (Flag)
477 thumb

thank you

Posted by loarie over 1 year 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 over 1 year 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 about 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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invertzoo invertboy 2 people agree
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