1. Phylum Arthropoda-Class Arachnida
Black Widow
Mexican Red-kneed Tarantula
Bark Scorpion

3. Arachnid Characteristics
Have 2 segments-a head/chest section and an abdomen
Have 8 legs
Almost all are carnivorous, they feed on the pre-digested bodies of insects and other small animals
Several groups are venomous - they secrete venom from specialized glands to kill prey or enemies.
Some are parasites, which can be carriers of disease

4. Web Spinning
Spiders have silk spinning glands called spinnerets, at the tip of their abdomen
Not all arachnids spin webs.
Webs get dirty and torn, so lots of spiders make a new one every day.  They don't waste the old one, though--they roll it up into a ball and eat it!

6. More Samples of Arachnids…
Deer Tick
Daddy long legs carrying eggs
Mite