arachnid Synonym

spider - scorpion - tick - mite - harvestman - daddy longlegs - tarantula - black widow - brown recluse - wolf spider - jumping spider - orb-weaver - huntsman spider - camel spider - whip spider - pseudoscorpion - solifuge - vinegaroon - recluse spider - funnel-web spider - trapdoor spider - crab spider - lynx spider - sac spider - cellar spider - garden spider - hobo spider - redback spider - mouse spider - peacock spider - golden silk orb-weaver - goliath birdeater - Brazilian wandering spider - Sydney funnel-web spider - six-eyed sand spider - Chilean recluse spider - banana spider - zebra spider - green lynx spider - spitting spider - purseweb spider - net-casting spider - ogre-faced spider - pirate spider - pelican spider - ant-mimic spider - ground spider - nursery web spider

Arachnids are a class of joint-legged invertebrate animals in the subphylum Chelicerata. They include spiders, scorpions, ticks, mites, and other similar creatures. These organisms usually have eight legs, and unlike insects, they do not have antennae or wings. Arachnids are primarily terrestrial, and many are predatory, hunting and consuming insects and other small animals. Some arachnids, like mites and ticks, can also be parasitic, feeding on the blood of hosts.