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Contact: Bill Hathaway
Yale University

A Butterfly Sex Role Reversal

Caption: When temperatures are cooler, female Bicyclus anynana actively court males, which take on the same role when temperatures are warmer.

Credit: William H. Piel and Antonia Monteiro/Courtesy of Yale University

Usage Restrictions: for use by all, with proper credit

Related news release: When it's cool, female butterflies chase males in sex role reversal

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