Arachnida Structure and Function

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Arthropod Classification - copyright nabrown RVC
Deer tick - Wikimedia Commons
  • Only two body divisions
    • Cephalo-thorax
    • Abdomen
  • Three pairs of legs in the larval stages or four pairs of legs during the nymphal and adult stages
  • No wings
  • No antennae
  • No compound eyes
  • Small size
    • E.g. Ticks are under 1cm in length
    • E.g. Mites are under 1mm in length

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