Classes of Arthropods.

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Presentation transcript:

Classes of Arthropods

Dichotomous Key

Anatomy Compound Eye Head Thorax Ocelli Abdomen Abdomen Cephalothorax Antennae www.life.umd.edu Abdomen Cephalothorax

Arachnida Antennae absent Spiders, ticks, mites, scorpions, etc. www.airductpros.com www.dkimages.com

Black Widow Spider www.dkimages.com

Brown Recluse Spider www.desertusa.com www.dkimages.com

Crustacea Two pair of antennae present Crawfish, crabs, sowbugs, etc. audilab.bmed.mcgill.ca www.yummycajun.com images.allmoviephoto.com

Insecta One pair of antennae Three pairs of legs Beetles, butterflies, bees, etc.

Chilopoda Many pairs of legs with one pair of legs per body segment Poisonous fangs at end of body Centipedes

Diplopoda Many pairs of legs with two pairs of legs per body segment Millipedes www.bugman123.com www.seattlebugsafari.com

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