Contact: Kim Thurler
Caption: These male fireflies give a nuptial gift -- sperm wrapped in a nutritious, high-protein package -- to females during mating. New research led by Tufts University biologists shows that some fireflies have evolved to have wingless females, and their males forego gift-giving to these "stay-at-home" mates.
Credit: Tufts University
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Related news release: In fireflies, flightless females lose out on gifts from males