Spiders have two main body parts: cephalothorax and abdomen while insects have three main body parts: head thorax and abdomen.
Spiders have eight walking legs while insects have six walking legs.
Spiders have simple eyes while insects have compound eyes.
Spiders have piercing jaws called fangs while insects have chewing jaws called mandibles.
Spiders cannot fly while insects can fly.
Some General Facts about Spiders
Spiders are found on every continent except Antarctica.
All spiders produce silk but not all spiders spin webs.
Some spiders are kind of cute.
Spiders have either six or eight eyes depending on the species.
Despite having so many eyes many spider species have poor eyesight, they make up for it with the tiny hairs that line their eight legs.
The hairs can detect scents, helping spiders find food and potential mates.
A spider's leg hair is also designed to sense vibrations such as when prey lands on their web.
This is one reason why they don't like areas with a lot of action or noise.
Trap door spiders have been documented to live up to 35 years in the wild.
The Goliath bird eating Tarantula is the largest spider in the world which can reach up to 1 foot long in body length and have fangs that are 4 inch long.
Water spiders live in lakes and ponds but they cannot breathe underwater. They spin themselves a bell-shaped web and keep it filled with air by collecting bubbles from the surface.
Spitting spiders do not use webs, instead they make sticky gum which they fire out through their fangs. This completely covers an insect and sticks it to the spot.
Most spiders are poisonous at least to insects. Two species are poisonous to humans.
Like snakes, spiders use poison to defend themselves and kill their prey.
A spider jabs its fangs into its victim and holds on while the poison pumps into the prey.
A spider bite always leaves two little holes in the skin.
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