TITLE

Arachnids

PUB. DATE
January 2009
SOURCE
World Book Science Dataset;1/1/2009, p1
SOURCE TYPE
Encyclopedia
DOC. TYPE
Reference Entry
ABSTRACT
Arachnid, a general name for any animal that belongs to the class Arachnida. Arachnids include spiders, scorpions, harvestmen (or daddy longlegs), mites, and ticks. Arachnids are widely distributed over the world. Arachnids are invertebrates (animals without backbones). The body is made up of a cephalothorax (fused head and thorax) and abdomen, and usually six pairs of appendages. The first pair are the chelicerae, for catching and holding prey; those of spiders have poison sacs and fangs. The second pair are the pedipalps, for feeling and for manipulating prey. The other four pairs are for walking and�in some arachnids�for feeling.
ACCESSION #
37309811

 

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