Apodemia mejicanus, commonly known as the Mexican metalmark, is a species of butterfly found in North America. It belongs to the family Riodinidae and is known for its striking metallic blue coloration on the upper side of its wings. The wingspan of Apodemia mejicanus ranges from 2.5 to 3.5 centimeters, and it can be found in various habitats, including open grasslands and desert areas. The larvae of this species feed on plants from the family Asteraceae.