PPT Slide

Subphylum Chelicerata

• Lack antennae

• Body is usually composed of two regions: cephalothorax and abdomen

• Cephalothorax is usually covered dorsally by the carapace

• Six pairs of appendages: first pair are modified feeding structures - chelicerae

• Second pair are called pedipalps

• Four additional pairs of appendages are walking legs

• No abdominal appendages

• Some have compound eyes, usually have simple eyes capable of forming crude images.

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