Fireflies of the genus Photinus contain this toxin?
Both P. ignitus and P. marginellus are known to contain lucibufagins, which is structurally similar to bufadienolides.
Knight M. et al. Firefly toxicosis in lizards. Journal of Chemical Ecology 1999; 25(9): 1981-1986. https://doi.org/10.1023/A:1021072303515
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