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There are more than 37,000 species of spiders worldwide, but they all share the same basic features, including eight legs, two body segments (the cephalothorax and abdomen), an exoskeleton, silk glands and fangs. They be... More »

www.reference.com Pets & Animals Bugs Spiders

Spiders are invertebrates, meaning they have no back bone. Spiders are also members of the phylum arthropoda because they have an exoskeleton, paired legs, bilateral symmetry and a segmented body. More »

www.reference.com Pets & Animals Bugs Spiders

Spiders are invertebrate animals that belong to the class Arachnida. There are about 40,000 species of spider, which live on all the continents except Antarctica. All spiders can produce silk, the strongest known natural... More »

www.reference.com Pets & Animals Bugs Spiders
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All spiders have eight legs and a body composed of two parts: a cephalothorax and an abdomen. There are an estimated 40,000 different species of spiders. Wolf spiders can be identified by their eyes; they have a bottom r... More »

www.reference.com Pets & Animals Bugs Spiders

There are more than 37,000 species of spiders worldwide, and all possess the same features that unite them with other members of arachnid family, including having eight legs arranged as two sets of four as well as lackin... More »

www.reference.com Pets & Animals Bugs Spiders

The brown recluse spider can be identified by its half-inch-long body that is light brown and has a darker brown, fiddle-shaped mark on the upper cephalothorax (the part of its body between its head and its abdomen). It ... More »

www.reference.com Pets & Animals Bugs Spiders

All spiders have eight legs. Spiders also possess a pair of shorter limbs called the pedipalps, that in males serve as sex organs. Spider legs contain seven distinct segments. More »

www.reference.com Pets & Animals Bugs Spiders