Caltrop (Tribulus terrestris). The hard, spiny fruits can be very painful if sat or stood upon.

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Photo credit: © BOB GIBBONS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -biting, animal, antennae, biological, biology, chironomus, close, coloured, crocodile, diptera, egypt, entomological, entomology, fauna, feathery, fly, insect, invertebrate, island, large, leaf, luxor, midge, midges, nature, nile, pale, plumose, resting, river, species, wildlife, zoological, zoology