5403679778_867634f529 5403083563_16bda80dbe_s
Photo © Scott Loarie, some rights reserved
pillar point CA (Google, OSM)
37.494730899, -122.4988705725
Accuracy: 29m
open
Logo-eee-15px

Comments & Identifications

477-thumb
angular unicorn - Photo (c) Scott Loarie, some rights reserved (CC BY)
loarie's ID: angular unicorn (Acanthina spirata [inactive]) (inactive taxon)
Posted by loarie almost 4 years ago (Flag)
933-thumb
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 3 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 about 1 year 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 1 year ago (Flag)
50920-thumb
Spotted Unicorn - Photo (c) Jerry Kirkhart, some rights reserved (CC BY)
invertzoo's ID: Spotted Unicorn (Acanthinucella punctulata)
Posted by invertzoo 3 months ago (Flag)
50920-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 invertzoo 3 months 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 3 months ago (Flag)
477-thumb

thank you

Posted by loarie 3 months ago (Flag)
50920-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 invertzoo 3 months 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 18 days ago (Flag)
Sign in or Sign up to add comments
Sign in or Sign up to add identifications

Identification Summary

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
invertzoo invertboy 2 people agree

Suggest an ID

Sign in or Sign up to add IDs
Logo-eee-15px
Logo-eee-15px
Logo-eee-15px

Data Quality Assessment

Community-supported ID? Yes
2 people agree
0 people disagree
Date? Yes
Georeferenced? Yes
Photos or sounds? Yes
Is the organism wild/naturalized? Unknown
What do you think?
Yes / No
Does the location seem accurate? Unknown
What do you think?
Yes / No
Does the date seem accurate? Unknown
What do you think?
Yes / No
Appropriate? Yes
Quality grade research
Details Hide details
Logo-eee-15px
Observation © Scott Loarie
Cc-by_small some rights reserved

Is this observation inappropriate, spam, or offensive? Flag this observation

If you think this observation is inaccurate, please add an ID, participate in the quality assessment above, or describe the inaccuracy in a comment.

Logo-eee-15px
Pin_it_button