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50.2 MB (50.0 MB compressed)
4760 x 3685 pixels
40.4 x 31.2 cm ⏐ 15.9 x 12.3 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Black fly pupa. Coloured scanning electron micrograph (SEM) of the pupa of a black fly (family Simuliidae), inside its pupal case (conical). Black fly pupa are aquatic, using the threads seen here to attach themselves to rocks.
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