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Peppermint-stick insect: the mint-spraying rainforest bug [1]

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Date: 2025-12-10  

The peppermint-stick insect (Megacrania batesii) lurks deep in Australia's rainforests and Papua New Guinea. This slim, green bug has a weird superpower: it sprays peppermint-scented liquid at predators.

You can watch the peppermint-stick insect in action here. To humans, it smells like mint tea. To predators, it's a sinus assault. These insects can spray their scent forward and backward, protecting themselves from all angles.

Peppermint stick insects matter for several reasons. They feed on pandanus leaves, shaping plant growth and maintaining rainforest balance. Their presence (or absence) indicates habitat health. Because they need such specialized environments, even minor disruptions—such as coastal development or cyclones—can devastate their populations.

Conservation efforts focus on protecting the pandanus forests these insects need. Researchers and local groups monitor isolated populations, map remaining habitat patches, and prevent further loss from development or invasive pests. Community projects restore damaged coastal vegetation, creating safe corridors for the insects to move and repopulate.

See also: This close-up video of a praying mantis eating a fly is pure insect horror

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