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Pieris rapae butterflies

Pieris rapae butterflies

Female imported cabbageworm butterflies (Pieris rapae), also known as cabbage white butterflies, depend less on nuptial gifts from males in agricultural environments where nitrogen is abundant. When a female is unreceptive to courtship she will spread her wings and raise her abdomen, as shown here, to prevent the male from attaching and mating with her. (Photo by Wikipedia user Alpsdake, CC BY-SA 3.0)

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