| | Spider - Biocrawler (Site not responding. Last check: 2007-10-23) |
 | | Spiders, unlike insects, have only two body segments instead of three; a fused head and thorax (called a cephalothorax or prosoma) and an abdomen (called the opisthosoma), supported by a hard exoskeleton composed of mainly of chitin. |
 | | Spiders also have eight legs (insects have six), no antennae, and their eyes are single lenses rather than compound eyes. |
 | | While venom from either spider can be deadly to children and the infirm, since the development of antidotes to the venoms of both were developed (the funnel web spider in the mid-1980's and the wandering spider in 1996), no humans have died from their bites. |
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