Arachnid Arachnid Arachnids () are a class (Arachnida) of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata. Almost all adult arachnids have eight legs, although the front pair of legs in some species has converted to a sensory function, while in other species, different appendages can grow large enough to take on the appearance of extra pairs of legs. The term is derived from the Greek word ("aráchnē"), from the myth of the hubristic human weaver Arachne who was turned into a spider. Spiders are the largest order in the class, which also includes scorpions, ticks, mites, harvestmen, and solifuges. Almost
Arthropods in film buildings than fire. They are responsible for many of the most dreaded diseases of man and his domestic animals... Some of them eat or attack everything man owns or produces-including man himself ." Thus, insects and other arthropods are dangerous to humans in both obvious and less obvious ways. Undoubtedly, arthropods are dangerous for their potential to carry disease. Somewhat less apparently, arthropods cause damage to buildings, crops, and animals. Since arthropods can be harmful in so many ways, using insects and other arthropods to frighten people in movies was a logical step. Aside from a natural fear or aversion