Blister Beetle: A Beetle with a Unique Built-In Defense
Poisonous blister beetles with bright black and red warning coloration. They are some of the most colorful beetles.
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The Blister Beetle is a flying beetle that commonly has a striking, deep orange shell color accentuated with black stripes. Green and yellow are also popular marking colors. These beetles, native to North America, have the Least Concern status because of a built-in defense mechanism. The species can secrete a toxic oil from its joints when facing a predator threat, an effective deterrent. This oil secretion is a perfect compensation for the brightly-colored shell, which attracts some predators not as easily deterred when seeing the colors. Some predatory species cannot see the colors of these colorful beetles indicating toxicity, making the insects easy prey in such circumstances.