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Echo Azure

Scientific Name:

Celastrina echo




Chaparral, forests, mountain streams, and suburban neighborhoods


Western North America from Baja California to southern British Columbia


Generally secure across their range

This species is


to the Truckee Meadows.


Echo azures are butterflies that, as their name suggests, are a chalky blue-gray in color. They are fairly small butterflies with wingspans usually between 2 to 3 inches wide. Besides the chalky blue-gray color of their wings, echo azures can also be recognized by their triangular brown spots.

Fast Facts:

  • Echo azure eggs are laid on the buds of plants which larvae, after emerging, will feed on.

  • Echo azure larvae are often tended to by ants, sometimes pupating in ant nests.

  • Adult echo azures will go through several generations between early spring and fall, after which  flight is possible. In higher elevations, the  period until flight is shorter.

  • Important host plants for echo azure caterpillars include wild lilacs, California buckeye, and blackberries. Adult echo azures will feed on the nectar of both caterpillar host plants as well as a variety of others.



Jill Katz (research, content, & photo)

Alex Shahbazi (edits & page design)

Last Updated:

March 27, 2024 at 1:48:23 AM

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