Medium Square
Photo by Scott Loarie, no rights reserved
pillar point CA (Google, OSM) Details Hide details
Logo eee 15px

Comments & Identifications

Thumb
angular unicorn - Photo no rights reserved
loarie's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by loarie almost 6 years ago (Flag)
Thumb
angular unicorn - Photo no rights reserved
chriswbrown's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by chriswbrown almost 5 years ago (Flag)
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 about 3 years ago (Flag)
Thumb
Angular Unicorn - Photo (c) Femorale, some rights reserved (CC BY-NC)
chriswbrown's ID: Angular Unicorn (Acanthinucella spirata) Added as part of a taxon swap
Posted by chriswbrown about 3 years ago (Flag)
Thumb
Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
susanhewitt's ID: Spotted Unicorn (Acanthinucella punctulata)
Posted by susanhewitt about 2 years ago (Flag)
Thumb

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

thank you

Posted by loarie about 2 years ago (Flag)
Thumb

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 susanhewitt about 2 years ago (Flag)
Thumb
Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
chriswbrown's ID: Spotted Unicorn (Acanthinucella punctulata)
Posted by chriswbrown about 2 years ago (Flag)
Sign in or Sign up to add comments
Sign in or Sign up to add identifications
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)
About
susanhewitt chriswbrown 2 people agree
Logo eee 15px
Logo eee 15px
Logo eee 15px

Data Quality Assessment

Research
Details Hide details
Logo eee 15px
Observation by Scott Loarie
Cc0 small no rights reserved
Pin it button
Member of the iNaturalist Network   |   Powered by iNaturalist open source software