Spider Spider Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs able to inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. , at least 45,700 spider species, and 113 families have been recorded by taxonomists. However, there has been dissension within the scientific community as to how all these families should be classified, as evidenced by
Arthropods in film print articles. Arthropods are effective tools to instill horror, because fear of arthropods may be conditioned into people's minds. Indeed, Jamie Whitten quoted in his book "That We May Live", (talking about insects): "The enemy is already here-in the skies, in the fields, and waterways. It is dug into every square foot of our earth; it has invaded homes, schoolhouses, public buildings; it has poisoned food and water; it brings sickness and death by germ warfare to countless millions of people every year... The enemy within-these walking, crawling, jumping, flying pests-destroy more crops than drought and floods. They destroy more