Tawny to orange-brown dorsally, with black markings. Both males and females have black chains along the dorsal wing margins, although the chaining is light in males and heavy in females. The ventral hindwing disc color varies from shades of light brown to brandy-colored with the silver orbs large and ovoid. The silver spots are relatively bold, accentuated by rims of black scales. In the marginal row, the ventral hindwing has flattened, inwardly rounded silver spots, broadly and flatly capped with olive-tan. The yellow submarginal band is narrow on the ventral hindwing. The ventral hindwing silver spots are not visible from above as lighter areas (i.e., they do not show through the wing). With a wing span of 5 to 8.6 cm (2 to 3.375 in.), this species is relatively large for the genus. It is somewhat squarish in wing outline, with the apices of the forewing drawn out and protruding forward.
Overview
- Species Common Name Coronis Fritillary (butterfly)
- Species Scientific Name Argynnis coronis coronis
Ecoregions
East Cascades
The East Cascade ecoregion extends from the Cascade Mountains' summit east to the warmer, drier high desert and down the length of the state. This ecoregion varies dramatically from its cool, moist border with the West Cascades ecoregion to its dry eastern border, where it meets sagebrush desert landscapes.
Klamath Mountains
The Klamath Mountains ecoregion covers much of southwestern Oregon, including the Klamath Mountains, Siskiyou Mountains, the interior valleys and foothills between these and the Cascade Range, and the Rogue and Umpqua river valleys. Several popular and scenic rivers run through the ecoregion, including the Umpqua, Rogue, Illinois, and Applegate rivers. Historically, this ecoregion is known …