The California dogface graces the seventh non-machineable butterfly stamp for use on irregularly sized envelopes, such as square greeting cards, invitations, or announcements. The stamp art was digitally created using images of preserved butterflies as a starting point. The result is a highly stylized, simplified image of a California dogface (Zerene eurydice) rather than an exact replica. This species is the state insect of California.

The species’ name comes from its wing pattern of the male, which resembles a dog’s face.

This butterfly lives in the California chaparral and woodlands habitats of Southern California’s Santa Ana Mountains. They fly very fast and are only approachable when nectaring at flowers.