Adult butterflies in this family are nearly all white or yellow, which is where they get their name. Their wings may have a few dark spots, or a dark edge, but they don't have many stripes or spots. They are medium-sized butterflies, with all six legs fully developed. In some species the color of adults is affected by the temperature when they pupated. Cooler temperatures usually produce darker colors.
Some species of Whites feed on plants in the mustard family that have toxic chemicals for protection. The caterpillars store the toxins in their body to discourage predators from eating them. Some other species of Whites may be mimicking the toxic ones by having similar wing colors and patterns.
The caterpillars in this group are mostly green or yellow and cylinder-shaped, and are covered with fine hairs or little black bumps.
Other Physical Features: ectothermic ; bilateral symmetry
Sexual Dimorphism: sexes alike; female larger
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