Celastrina lucia

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Celastrina lucia, the lucia azure (also called the northern azure or eastern spring azure), is a small butterfly in the Lycaenidae family. It is found in eastern North America, from the Maritimes to West Virginia, in open woodlands and similar habitats. The wingspan is about 22–35 mm. Males and females look different, and adults fly from April to July. The caterpillars feed on Vaccinium plants, including Vaccinium pallidum.

Historically, many North American azures were considered a single species, Celastrina ladon, but scientists now recognize several distinct species, including C. lucia. Subspecies include Celastrina lucia lucia and Celastrina lucia lumarco (Scott, 2006). Binomial name: Celastrina lucia (Kirby, 1837).