Page 5 - Crustaceans

 Chelicerata, unlike insects, have

only two body segments instead of

three: a fused head and thorax

(cephalothorax) and an abdomen

 Chelicerata species have eight legs

(four pairs) whereas insects have

six (three pairs). Types of chelicerae: (A)

jackknife, (B) scissor, and

 The Chelicerae are pointed (C) 3-segmented chelate

appendages to grasp food, and are

found in place of the chewing

mandibles most other arthropods

have.