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It can be argued that the perfection of camouflage is largely driven by the acuity of a predator’s vision. In many insects, such as among the great diversity of stick insects (phasmids), this selective pressure probably derives from the keen eyesight of insectivorous birds. Here, a female phasmid (Hermagoras sigillatus) from the Bornean rainforest performs a remarkable crypsis by folding her front legs forward, their expanded flanges matching together to form the resemblance of a decaying twig. This disguise not only breaks up the outline of her head (at bottom in this photo), but also conceals her antennae which otherwise could give away her disguise. Sarawak, Malaysia (Borneo).

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© Chien C. Lee
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Contained in galleries
Borneo, Insects, Camouflage
It can be argued that the perfection of camouflage is largely driven by the acuity of a predator’s vision. In many insects, such as among the great diversity of stick insects (phasmids), this selective pressure probably derives from the keen eyesight of insectivorous birds. Here, a female phasmid (Hermagoras sigillatus) from the Bornean rainforest performs a remarkable crypsis by folding her front legs forward, their expanded flanges matching together to form the resemblance of a decaying twig. This disguise not only breaks up the outline of her head (at bottom in this photo), but also conceals her antennae which otherwise could give away her disguise. Sarawak, Malaysia (Borneo).