tcha
07/21/11, 08:41 PM
Insects have an exoskeleton, a three-part body (head, thorax, and abdomen), three pairs of jointed legs, compound eyes, and two antennae.
Spiders have eight legs, soft bodies.
Spiders belong to the class of arachnids which also includes scorpions, ticks and mites. None of these are actually classed as insects. Unlike insects they have eight legs, eight eyes in most cases, no wings,and only two, not three parts to their bodies.
Read more: http://wiki.answers.com (http://wiki.answers.com/Q/Why_is_a_spider_not_considered_an_insect#ixzz1So2r yLlw)
Spiders have eight legs, soft bodies.
Spiders belong to the class of arachnids which also includes scorpions, ticks and mites. None of these are actually classed as insects. Unlike insects they have eight legs, eight eyes in most cases, no wings,and only two, not three parts to their bodies.
Read more: http://wiki.answers.com (http://wiki.answers.com/Q/Why_is_a_spider_not_considered_an_insect#ixzz1So2r yLlw)