Yellow Angled-Sulphur

Wing span: 3 1/4 - 4 5/8 inches (8.2 -11.7 cm).

Identification: Large. Apex of forewing hooked. Upperside of male bright yellow, female paler; both with black spot in forewing cell.

Life history: Fly high and swiftly. Female usually lays several eggs on a single plant. Caterpillars eat leaves and develop continously during the wet season.

Flight: Two flights, April and August-December, in South Texas; all year in Central and South America.

Caterpillar hosts: Cassia (Cassia emarginata) in the pea family (Fabaceae).

Adult food: Nectar from red and purple flowers including Hibiscus and Bougainvilla.

Habitat: Subtropical, open, sunny areas; migrants found almost anywhere.

Range: Resident fr... read moreom Peru to Mexico; rare, irregular migrant to eastern Nebraska, southeast Arizona, southwest New Mexico, south Texas, Mississippi, and Florida.