Arachnids What are Arachnids?. Arachnids Arachnids are spiders, scorpions, mites, and ticks. What...
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Transcript of Arachnids What are Arachnids?. Arachnids Arachnids are spiders, scorpions, mites, and ticks. What...
Arachnids
What are Arachnids?
Arachnids Arachnids are spiders,
scorpions, mites, and ticks. What they all have in common, and what distinguishes them from insects, are four pairs of legs and no antennae.
Focusing on Spiders
What are Spiders?
Spiders are small eight legged creatures that are best known for spinning silk webs.
Jumping Spider
Fishing Spider
There are more than 30,000 kinds of spiders.
JEWELLED SPIDERS
LYNX SPIDERS
Golden Silk Orb Weaver
Black House Spider
Spider Life A spider’s life span
ranges from one season to 20 years depending on the type of spider.
Spiders can live anywhere they can find food like fields, woods, swamps, caves and deserts.
Spider Bodies A spider's body has two
main parts.
Spiders come in different shapes and sizes.
Spiders come in different colors.
A spider has no bones and its tough skin serves as a protective outer skeleton.
Spider Legs Spiders have four
pairs of legs.
When a spider walks, the first and third leg on one side of its body move with the second and fourth leg on the other side
Spider Eyes A spider's eyes are on top
and near the front of its head.
Most species have eight eyes, arranged in two rows of four each.
Some spiders can see better than others.
Spider Webs Not all spiders spin webs.
Wherever a spider goes, it spins a silk thread behind itself.
Spiders use their webs or draglines to catch prey, for shelter, and for a quick get away!
Spider Food Below the spider's eyes is
its mouth opening.
The spider can only eat some of the solid tissue of its prey by predigesting it.
A large tarantula can reduce a mouse to a small pile of hair and bones in about 36 hours by predigestion and sucking.
Helpful vs. Harmful Spiders Spiders are helpful to people because they eat
harmful insects which destroy crops.
A few kinds of spiders are harmful to human beings.
Black
Widow
Venusta Orchard Spider
LYNX SPIDERS
SPINED MICARATHENA