What toxic secretion from Paederus species causes painful rashes upon skin contact?
Answer
Paederin
While many Staphylinidae species are beneficial to gardeners due to their predatory habits, some present a direct health risk upon accidental contact. Specifically, species belonging to the genus Paederus contain a potent chemical defense mechanism. This defense is a toxic secretion known as paederin. If an insect of this species is accidentally crushed against human skin indoors, this chemical is released, which can lead to severe irritation and the development of painful rashes. Recognizing this risk is important for managing proximity, even when the beetles are generally considered beneficial outdoors.
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