Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Regional Butterfly and Moth Information

United States

Click on a region name to find data-rich information, including recently verified sightings, links to species checklists, and more.

Or, click on the Top 20 button to see the most commonly reported butterflies and moths.

 

We can help identify your butterfly or moth!

If you know the date and location where the photograph was taken, we can help. It's simple!

 Register for a free account

  Submit a Sighting

A coordinator will review your submission, and you will get an email with the identification.

We will store your submitted data. Your submission will contribute to our species profiles, checklists, and database. You can track all your submissions and create a personal species list.


Identifying Caterpillars

Do you have a photograph of a caterpillar? If so, when you submit your photograph, please provide us with host plant information if possible. Consider raising it to the adult stage before submitting photographs.

Surprisingly, most of the larval stages of butterflies and moths are simply unknown, and caterpillar photographs can be very difficult to identify. It may take some time for a coordinator to identify your caterpillar.

Browse all caterpillar images

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