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Variable Checkerspot

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description Variable Checkerspot Overview

The Variable Checkerspot (Euphydryas chalcedona) is a butterfly species native to western North America, frequently found from the Pacific Northwest down through California and into Baja California. It is highly polymorphic, meaning its wing patterns vary significantly across different regions and subspecies, typically featuring complex bands of black, red, orange, and white. This species typically inhabits chaparral, oak woodlands, and montane environments where its larval host plants, such as various species of monkeyflower and figwort, are abundant. Adults generally emerge in the spring and early summer to breed and feed on nectar.

help Variable Checkerspot FAQ

Where is the Variable Checkerspot found?

The Variable Checkerspot, Euphydryas chalcedona, occurs across western North America from the Pacific Northwest through California and into Baja California. It is especially associated with rocky canyons, chaparral, and streamside or foothill habitats. [Butterflies and Moths of North America](https://www.butterfliesandmoths.org/species/Euphydryas-chalcedona)

Why does the Variable Checkerspot look so different from place to place?

Euphydryas chalcedona is highly polymorphic, so its black, orange, red, yellow, and white wing patterns vary between populations. Elevation and geography can produce especially visible differences in California.

What plants do Variable Checkerspot caterpillars eat?

Documented host plants include penstemons, Indian paintbrush, snowberry, honeysuckle, and other regional species. Host use varies by population, so there is no single plant that explains the species across its entire range. [Butterflies and Moths of North America](https://www.butterfliesandmoths.org/species/Euphydryas-chalcedona)

When do Variable Checkerspot butterflies fly?

In California and Oregon, adults commonly fly from April through June, while northern and high-elevation populations often fly in June and July. Some desert populations can produce several flights from April through October. [Butterflies and Moths of North America](https://www.butterfliesandmoths.org/species/Euphydryas-chalcedona)

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