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Arthropods. Main Characteristics Jointed appendages Segmented body Exoskeleton (skeleton on outside) Mandibles – chewing mouthparts Metamorphosis ( egg.

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Presentation on theme: "Arthropods. Main Characteristics Jointed appendages Segmented body Exoskeleton (skeleton on outside) Mandibles – chewing mouthparts Metamorphosis ( egg."— Presentation transcript:

1 Arthropods

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

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

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

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

6 Crustaceans Shrimp, lobsters, crabs, crayfish o 4 pairs of legs o 2 claws (chelipeds) o 2 pair of antennae

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

8 Insects 3 pairs of legs 1 pair of antennae 3 body segments (head, thorax, abdomen)

9 Pictures of Arthropods

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16 ORDER HYMENOPTERA

17 What is the difference between a moth (1 st picture) and a butterfly (2 nd ) ? Moth antennae end in clubs, they’re bodies are often furrier and when at rest, their wings are flat (butterflies rest with the wings pointing up ORDER LEPIDOPTERA

18 ORDER ODONATA

19 Brown recluse bites cause necrosis (death of tissue).

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21 Termites: Order Isoptera

22 ORDER DIPTERA

23 Head lice

24 Order Siphonaptera

25 Beetles: Order Coleoptera

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