WIM VAN EGMOND / SCIENCE PHOTO LIBRARY WIM VAN EGMOND / SCIENCE PHOTO LIBRARY
Mating water mites (Arrenurus sp.), dark-field illumination light micrograph. Water mites are freshwater arachnids. This genus is sexually dimorphic with the female (left) being round in shape. Magnification: x44 when printed 10 centimetres wide.
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