Housefly foot

Housefly foot

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Caption: Scanning electron micrograph of a foot of a housefly, Musca domestica. The foot of the fly consists of two claws (above, antlerlike) & two pads or cushions called pulvilli (below, white). The foot serves a dual purpose; on rough surfaces the claw grips & on smooth surfaces the miniature tubes covering the pads secrete a substance, which enables adhesion. It is uncertain whether the tubes secrete a glue or whether physical effects of surface tension & molecular action account for the adhesion. Many of the hairs, or setae, on the insect serve as tactile sensory organs. Magnification 760 (at 10x8 inch size).

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Keywords: animal, fly, foot, foot of housefly, housefly, insect, insecta, invertebrate, invertebrates, musca domestica, nature, pulvillus, scanning electron micrograph, sem, wildlife, zoology

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