What does this class include?
ticks, scorpions, spiders, mites
What additional characteristics do they have?
glad that produces silk for webs
How are their appendages modified?
spiders?
scorpions?
ticks and mites?
spiders: modified chelicerae used as fangs to inject posion
scorpions: pedipalps are modified to pinchers
ticks and mites are shaped for their parasitic lifestyle
Where are they found?
worldwide
What type of habitat do they live in?
ocean