Hemiargus isola

Reakirt's blue
Scientific classification
Kingdom:	Animalia
Clade:	Euarthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Lycaenidae
Genus:	Hemiargus
Species:	H. isola
Binomial name
Hemiargus isola (Reakirt, 1866)
Synonyms
Lycaena isola Reakirt, [1867] Echinargus isola Lycaena nyagora Boisduval, 1870 Lampides zachaeina Butler & Druce, 1872 Lycaena alce Edwards, 1871

Hemiargus isola, the Reakirt's blue, is a butterfly of the family Lycaenidae. It is found in Central America and the extreme southern U.S. Hemiargus isola migrates regularly throughout most of the U.S. almost to the Canada–United States border, and very rarely into the southern prairies.

The wingspan is 16–23 mm. Adults are on wing from June to October in the north and year round in south.

The larva feed on Fabaceae, particularly mesquites (Prosopis species).

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