Viceroys have a black line across the hindwing vein.Īdult monarchs nectar on a variety of flowering plants. How can you tell a monarch from a Viceroy? The Viceroy butterfly is smaller than the monarch butterfly, on average, but some monarchs are smaller than some Viceroys are, so size is not a good way to tell them apart. In North America, 40 to 45 degrees latitude and 90 to 100 degrees longitude have the most monarchs. Is there a location in North America with the most number of monarch butterflies? The Midwest tends to have the highest numbers of monarchs an, these are the areas where the most milkweeds grow.

Are monarchs in western North America the same species as those in eastern North America? Yes. In northern Canada, the climate is too cool for milkweed to grow, so the current northernmost distribution of monarchs is southern Ontario. There are a few monarchs high in the mountains in the Rocky Mountain range because there is not much milkweed growing there, and it is cooler than is ideal for monarchs. Do monarchs live everywhere in North America? Monarchs live everywhere milkweed grows. Karen Oberhauser, University of Minnesota. Monarch Butterfly Frequently Asked Questions (FAQs)Īnswers provided by Dr.

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