Blue Copper (Lycaena heteronea)
- Images of this species taken in California.
- http://www.vireos.com/bluecopper.html

Grey Copper (Lycaena dione)
- Image, physical description, range, flight season, and habits.
- http://www.cbif.gc.ca/spp_pages/butterflies/species/GreyCopper_e.php

Dorcas Copper (Lycaena dorcas)
- Photographs of this species taken in Michigan.
- http://vireos.com/dorcascopper.html

American Copper (Lycaena phlaeas)
- Species account includes photo, description of caterpillar and adult, range, and ecology.
- http://imnh.isu.edu/digitalatlas/bio/insects/butrfly/famlyc/lyphf.htm