Subphylum Myriapoda- Class Diplopoda Millipedes. Subphylum Myriapoda- Class Chilopoda Centipedes. Biramous limbs- outer part=exopodite, inner part=endopodite. Crustacean traits 3 tagmata- head, thorax, abdomen. Subphylum Crustatea Includes Classes Branchiopoda, Ostracoda, Maxillopoda, and Malacostraca. born looking like smaller version of adult, grows but looks the same. Types of Metamorphosis Holometabolous, Hemimetobolous, and Ametabolous. Thorax has 3 sub-segments- pronotum (no wings), mesonotum (1st pair of wings), metanotum (2nd pair of wings). Hexapoda tagmata 3 tagmata- head, thorax, abdomen. Subphylum Myriapoda Includes Classes Chilopoda (centipedes) and Diplopoda (millipedes) Subphylum Hexapoda Includes Class Insecta. Araneae Leg segments (from body going outward): Trochanter, Femur, Patella, Tibia, Metatarus, Tarus, Claw. Pedipalps used in reproduction- males= bulbous, females=small and straight. Telson modified as a stinger- Bulb= vesicle, Barb= aculus. Opisthosoma divided- mesosoma and metosoma (Tail). Pectines- sensory organs, females use to pick up spermatophore. Class Arachnida Includes Orders Scropionida (scorpions), Araneae (spiders), and Acari (mites and ticks) Order Scorpionida Scorpions. Chelicerata Tagmata Two Tagmata- prosoma (cephalothorax) and opisthosoma (abdomen).
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