Phylum Arthropoda
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Classes:
Arachnida: These include spiders, ticks, scorpions and mites. These animals have jointed appendages, segmented bodies and an exoskeleton. They do not have antennae or wings.
Arachnida: These include spiders, ticks, scorpions and mites. These animals have jointed appendages, segmented bodies and an exoskeleton. They do not have antennae or wings.
![Picture](/uploads/9/6/4/5/96451706/published/578538607.jpg?1485064278)
Crustacea: They have a hard exoskeleton made of calcium but no internal skeleton. The head has two compound eyes, two pairs of antennae and three pairs of mouthparts. They also have a pair of green glands that excrete wastes near the base of the antenna.
![Picture](/uploads/9/6/4/5/96451706/published/846222187.jpg?1485064335)
Diplopoda: They are the millipedes. They have two pairs of legs attached to the underside of the body. They are adapted to burrowing or inhabiting small crevices. They move slowly.
![Picture](/uploads/9/6/4/5/96451706/published/694566457.jpg?1485064382)
Chilopoda: they are the centipedes. They can posses 100 and more legs. They have a pair of legs for each body segment and can have an odd number of legs.They are known to be highly venomous and often inject paralyzing venom. They are predominantly carnivorous.
![Picture](/uploads/9/6/4/5/96451706/538556665.png)
Insecta: This class includes all insects. They have three main body segments : the head, thorax and abdomen. They also have six legs, one or two pairs of wings and specialized mouth parts.
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Marine Arthropods
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Terrestrial Arthropods
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