The wingspan is 73–96 mm (2. 9–3. 8 in). 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 form 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, Eupatorium and Bougainvillea.
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