Head to head
Common Buckeye vs American Copper
The common buckeye and American copper are both small to medium-sized butterflies that have thrived across disturbed and open habitat in North America, but each has taken a completely different route to that success.
| Common Buckeye | American Copper | |
|---|---|---|
| Scientific name | Junonia coenia | Lycaena phlaeas |
| Main survival strategy | Large false eyespots deter predators | Thrives on common weedy host plants |
| Wing pattern | Six large eyespots | Coppery orange with dark spots, no eyespots |
| Host plant tolerance | Various low-growing plants | Common weedy dock and sorrel |
| Habitat tolerance | Open, disturbed habitat | Disturbed habitat most butterflies avoid |
| Relative size | Medium-sized | Small |
| Conservation status | Least Concern | Least Concern |
| Diet | Herbivore | Herbivore |
Common Buckeye vs American Copper: common questions
How do the common buckeye and American copper defend themselves differently?
The common buckeye relies on six large false eyespots across its wings, which may startle a predator or redirect an attack toward the wing margin rather than the body, while the American copper has no comparable eyespot defence and instead survives mainly by thriving on common weedy host plants that let it persist in disturbed habitat most butterflies avoid.
Why can the American copper live in disturbed, weedy areas so easily?
This species' caterpillar feeds readily on common weedy dock and sorrel plants, host plants that grow abundantly in disturbed, human-altered habitat, allowing the American copper to persist in areas most other butterflies, including habitat specialists, tend to avoid due to a lack of suitable host plants.
How can you tell a common buckeye from an American copper?
Look for the common buckeye's six large false eyespots spread across its wings, a pattern the American copper entirely lacks; the American copper instead shows a simpler coppery orange colouration with dark spots but no eyespots, and is also noticeably smaller than the medium-sized common buckeye.