Boisduval's Yellow (Eurema boisduvaliana [Felder & Felder])
Wing span: 1 1/2 - 2 inches (3.8 - 5.1 cm).
Identification: Upperside lemon yellow with black borders; each hindwing slightly pointed. Male forewing with weak "dog's head" pattern; hindwing with wide black border projecting into yellow ground. Female forewing with black at apex; hindwing with narrow black edge.
Life history: Males patrol flats and gullies for females.
Flight: April-November in south Texas and northward, throughout the year in tropics.
Caterpillar hosts: Cassias (Cassia species) in the pea family (Fabaceae).
Adult food: Flower nectar.
Habitat: Subtropical forests and forest edges, scrub, roadsides, pastures.
Range: Costa Rica north to Mexico. Rare in south Florida (recorded only twice in the Keys); regular migrant to southeast Arizona, southwest New Mexico, and South Texas.
