Seeing Spots

Aug 11, 2010
If you've seen a lot of buckeye butterflies this season, you're not alone.

It's a big year for buckeyes, says noted butterfly expert Arthur Shapiro, professor of evolution and ecology at the University of California, Davis. He counts between "30 and 85 a day" in West Sacramento and North Sacramento.

The common buckeye butterfly (Junonia coenia) is not only distinctive, but quite attractive, especially when it lands on a red zinnia.

Its large eye spots on the wings (probably meant to scare off predators) draw you to its world of color and drama.

We saw this buckeye (below) in Napa, just off the Napa-St. Helena Highway. However, buckeyes are found all over the United States, except in parts of the northwest.

Maybe the northwest, too! An image of the buckeye appeared on a 24-cent U. S. postage stamp issued in 2006.

This intriguing member of the Nymphalidae family also appears on a popular poster available in the Bohart Museum of Entomology gift shop. The insect museum, at 1124 Academic Surge, UC Davis campus, also counts this butterfly as among its seven million mounted specimens.

By Kathy Keatley Garvey
Author - Communications specialist

Attached Images:

BUCKEYE BUTTERFLY (Junonia coenia) nectars on a zinnia, a member of the aster family. (Photo by Kathy Keatley Garvey)

Buckeye Butterfly

LIKE AN AIRPLANE in flight, a buckeye butterfly (Junonia coenia) glides to a zinnia. (Photo by Kathy Keatley Garvey)

Close-up