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    Aranea General Characteristics | Free Biology Notes

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    After reading this article you will learn about Aranea General Characteristics

    General Characteristics of Aranea

    • Body is divided into cephalothorax and abdomin
    • The cephalothorax has 6 pairs of appendages
      • First set of appendages chelicerae
      • 2nd set is the pedipalps
      • Remaining 4 pairs are the walking legs
    • Abdomen is unsegmented, rounded and without telson
    • Abdomen have 3 pairs of spinning organs which produce threads for construction of web
    • Arachnids do not have both wings and antennae
    • Arachnids have actually simple eyes called ocelli
    • Respiration by book lungs
    • Excretion by Coxal glands and Malphigian tubules
    • Development is direct
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