Arthropods.

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Presentation transcript:

Arthropods

Main Characteristics Jointed appendages Segmented body Exoskeleton (skeleton on outside) Mandibles – chewing mouthparts Metamorphosis ( egg - larva - adult) Classification Kingdom Animalia , Phylum Arthropoda             Various Subphylum

Subphyla (major groups) 1.  Chelicerates  (spiders and scorpions) 2.  Crustaceans  (lobsters, crabs, shrimp, crayfish) 3.  Uniramia (insects, millipedes, centipedes)

Chelicerates Spiders, ticks and scorpions 2 body segments                         cephalothorax, abdomen 8 legs No antenna Spiders belong to a special group called *Arachnids

Spider Parts Chelicerae - specialized mouth parts used for biting Pedipalps - appendages near the mouth used to manipulate prey Spinnerets - used to secrete a web

Brown recluse bites cause necrosis (death of tissue).

Centipedes & Millipedes Predators, poisonous 1 pair of legs per segment Millipedes Herbivores 2 pair of legs per segment

Insects 3 pairs of legs 1 pair of antennae 3 body segments (head, thorax, abdomen) http://shapeoflife.org/video/phyla/terrestrial-arthropods-conquerors

Beetles: Order Coleoptera

Order Siphonaptera

Crustaceans Shrimp, lobsters, crabs, crayfish 4 pairs of legs 2 claws (chelipeds) 2 pair of antennae http://shapeoflife.org/video/phyla/marine-arthropods-successful-design

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