Why is spider not called an insect?

Question

Why is spider not called an insect?

Answer 1

spiders are chelicerates and arachinids. it is not a hexapod and is not a mandibulate. it doesnot have six legs. so it is not an insect.

Answer 2

really  

Answer 3

A spider is not an insect. It has eight legs, no visible antennae and a two-piece body. Spiders, along with tics, mites, harvestmen and scorpions, belong to the class arachnida. A spider has silk-spinning structures, called spinnerets, at the back end of its abdomen, and usually eight eyes of various sizes and shapes grace its face.

A spider's mouth parts, too, are different from an insect's. Instead of mandibles capable of chewing, spiders have fang-tipped jaws called chelicerae. With these, they pierce their prey and inject a toxic fluid that immobilizes it; digestive juices dissolve its internal tissues. The spider's small, tubelike mouth, aided by strong abdominal muscles, pumps and sucks the victim until it is a shriveled husk. A strong-jawed spider, like the yellow garden spider or the tarantula, often mashes its prey between its chelicerae while ejecting digestive juices over it.

Answer 4

spider is an insect

Answer 5

Is that so....?

Amazing!!!

Answer 6

Because insects have six legs. Spiders have eight.

Answer 7

The same reason why a snake is not called a lizard.

Answer 8

other insect have 6 legs .spideer has 8 legs there for spider is not an insect.