Mating
SciShow Tangents
Milkweed Butterflies and Caterpillars
Milkweed butterflies are a genus of butterflies so named because of their relationship with plants in the milkweed genus. They lay their eggs on the plants and caterpillars feed on the leaves which contain a toxic sap. Adult male butterflies also use the chemicals to make mating pheromones that they present to females in what is known as a nuptial gift.
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