Ganyra josephina, the Giant White, is a butterfly

Butterfly

A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

 in the Pieridae

Pieridae

The Pieridae are a large family of butterflies with about 76 genera containing approximately 1,100 species, mostly from tropical Africa and Asia. Most pierid butterflies are white, yellow or orange in coloration, often with black spots...

 family. It is found from southern Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

 through Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 and Central America

Central America

Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

 to northern South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

. The habitat consists of open, dry, subtropical forests.

The wingspan

Wingspan

The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

 is 73 millimetre. The cell of the upper forewing of the male contains a prominent round black spot. The wet-season form of the female has a black cell spot and also some diffuse black postmedian spots. The veins are outlined with black near the wing margins. The dry-season for of the female is not so prominently marked. Adults are on wing from September to December in southern Texas. They feed on flower nectar from a variety of weeds and garden plants including Lantana

Lantana

Lantana is a genus of about 150 species of perennial flowering plants in the verbena family, Verbenaceae. They are native to tropical regions of the Americas and Africa but exist as an introduced species in numerous areas, especially in the Australian-Pacific region. The genus includes both...

, Eupatorium

Eupatorium

Eupatorium is a genus of flowering plants in the aster family, Asteraceae, containing from 36 to 60 species depending on the classification system. Most are herbaceous perennial plants growing to 0.5–3 m tall. A few are shrubs. The genus is native to temperate regions of the Northern Hemisphere....

and Bougainvillea

Bougainvillea

Bougainvillea is a genus of flowering plants native to South America from Brazil west to Peru and south to southern Argentina . Different authors accept between four and 18 species in the genus...

.

The larvae feed on older leaves of Capparidaceae species.

Subspecies

The following subspecies are recognised:

• Ganyra josephina josephina
• Ganyra josephina josepha (Salvin & Godman, 1868) (southern Texas, Mexico, Guatemala, Honduras, Nicaragua)
• Ganyra josephina krugii (Dewitz, 1877) (Puerto Rico)
• Ganyra josephina menciae (Ramsden, [1914]) (Cuba)
• Ganyra josephina janeta (Dixey, 1915) (Venezuela)
• Ganyra josephina paramaryllis (Comstock, 1943) (Jamaica)