Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Identify a Butterfly, Moth, or Caterpillar

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.


Visit our new region pages!

Use our region pages to identify a butterfly, moth, or caterpillar. How? Region pages include:

  • Top 20 reported species
  • Recently verified sightings
  • Photograph galleries of adults and caterpillars
  • Species checklists

Go to Regions

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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