Harvestman claw. Coloured scanning electron micrograph (SEM) of a harvestman claw.(order Opiliones). A harvestman catches its insect prey by using hooks or claws on the ends of its legs. Harvestman differ from spiders by having only one pair of eyes on a centrally positioned ocularium, they do not have venom glands or hollow fangs and are devoid of silk glands. The pedipalps are generally less complicated than spiders and are believed to be tactile sensory organs. Unlike spiders, there are small differences between the sexes which are shown on the pedipalps. These arachnids defend themselves by secreting a foul-smelling fluid. If they are caught, they are able to shed a leg to escape. Magnification: x300 when printed at 10 centimetres wide.

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TOP27147556

Source:

達志影像

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RM

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須由TPG 完整授權

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