The Changeable Firefly (Photuris versicolor), is a species of predatory firefly common throughout the Eastern United States. Like other fireflies, they famously use flash-based visual signaling to find mates at a distance and each species of firefly has a unique flash pattern sequence that males and females of the same species use to identify one another. Researchers have documented the ability of female changeable firefly to hunt males of other firefly species by mimicking the flash responses of female fireflies of other species. Changeable fireflies appear to target males, such as the eastern firefly, specifically for the lucibufagin steroids that their prey produce.
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