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Monarch Butterflies at the Racine Zoo in Racine, WI
Monarch Butterflies
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Monarch butterflies resting on the grounds of the Racine Zoo in Racine, Wisconsin.

The Monarch (Danaus plexippus) is a milkweed butterfly (subfamily Danainae), in the family Nymphalidae. It is perhaps the best known of all North American butterflies. Since the 19th century, it is also found in New Zealand, and has been known in Australia since 1871.

In Australia it is also known as the wanderer butterfly. In Europe it is resident in the Canary Islands, the Azores and Madeira, and is found as an occasional migrant in Western Europe. Its wings feature an easily recognizable orange and black pattern, with a wingspan of 8.9–10.2 cm (3½–4 in). The viceroy butterfly has a similar size, color, and pattern, but can be distinguished by an extra black stripe across the hindwing. Female monarchs have darker veins on their wings, and the males have a spot in the center of each hindwing from which pheromones are released. Males are also slightly larger.
(Source: http://en.wikipedia.org/wiki/Monarch_butterfly).

 


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This page updated or reviewed in March 2011