These insects look scary enough in daylight, then they glow in the dark!This remarkable species of South American cockroach, Lucihormetica luckae, owes its fluorescence to bacteria. The spots on the dark brown area of its carapace are pits inhabited by microbes that glow under fluorescent light.
A recent analysis of these creatures’ bioluminescence demonstrates that they and their cousin species glow at the same wavelengths as a toxin-producing beetle that lives in their area, suggesting that the roaches are mimicking a deadly neighbor to avoid getting picked off by predators.
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