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Mexican Yellow Eurema mexicana


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Mexican Yellow, Male
credit: Megan McCarty

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Family: Pieridae, Whites and Sulphurs view all from this family

Description The Mexican Yellow (Eurema mexicana, sometimes called the Wolf-Face Sulphur) is a North and South American butterfly in the family Pieridae. It occurs mainly in Mexico but occasionally is found in central and southwestern USA and rarely in Canada.

The upper side of the wings is pale yellow with a black fore wing submarginal border outlining a "dog" or "wolf-face" pattern. The hind wing has a small outer margin black border. The male has a bright yellow patch on the leading edge of the hind wing. The underside of the wings is pale yellow in summer individuals and pale yellow with reddish markings or all reddish-pink in winter individuals. The hind wing is sharply pointed. The wingspan measures 1 to 2 inches or 33-44 mm.

Dimensions 1 3/8-1 7/8" (35-48 mm).

Habitat Canyons & caves, Cities, suburbs & towns, Meadows & fields, Scrub, shrub & brushlands, Grasslands & prairies, Deserts.

Range Rocky Mountains, Plains, Southwest, California, Great Lakes, Southeast, Texas, Western Canada.