Caddisfly compound eye, SEM

Caddisfly compound eye, SEM

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Credit: CLOUDS HILL IMAGING LTD/SCIENCE PHOTO LIBRARY

Caption: Compound eye. Scanning electron micrograph one of the large compound eyes (red) of a caddis fly (order Trichoptera). Each compound eye is made up of numerous simple eyes called ommatidia. Each ommatidium sends a signal to the fly's brain, which combines the thousands of images to form a mosaic view of the world. The image is not sharp but is excellent at detecting movement. Caddisflies are moth-like insects but have hairy wings rather than the scaled wings of moths and butterflies.

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Keywords: animal, biological, biology, caddis fly, caddisfly, close-up, coloured, compound eye, entomology, eye, false-colour, false-coloured, fauna, hair, hairs, hairy, insect, insecta, invertebrate, invertebrates, nature, no-one, nobody, ommatidia, ommatidium, scanning electron micrograph, scanning electron microscope, sem, sensory, sight, trichoptera, vision, wildlife, zoological, zoology

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