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Big Taxonomy Confusion Syndrome!

Discussion in 'True Spiders & Other Arachnids' started by LeilaNami, Mar 22, 2009.

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    Okay so my brain is hurting trying to figure out how arachnids are separated into their orders and suborders. I'm trying to find defining characteristics that would help me identify them.
    1. Mesothelids
    2. True spiders (this I think I got down)
    3. Mygals and every thing contained within that
  2. Bastian Drolshagen

    Bastian Drolshagen Arachnobaron Old Timer

    Mesothelae: Dorsal opisthosoma segmented, spinnerets at medial portion of ventral opithosoma. Chelicerae working vertically.

    Mygalomorphae: Dorsal opisthosoma not segmented, spinnerets at posterior portion of ventral opisthosoma. Chelicerae working vertically.

    Araneomorphae: Chelicerae working horizontally
  3. jsloan

    jsloan Arachnoangel Old Timer


    Mesothelae: 2 pairs of book lungs

    Mygalomorphae: 2 pairs of book lungs

    Araneomorphae: 1 pair of book lungs
  4. Thanks guys that helps a lot