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Friday, September 19, 2014

Tuesday, September 4, 2012
Science & Life

Did You Know?

What's the difference between insects and arachnids?

L-R: Cicada (Insect), Scorpion (Arachnids)

There are many differences between insects and arachnids. Most are anatomical differences.

* The body of an insect is comprised of three segments: the head, thorax and abdomen. The body of an arachnid is comprised of two segments: the cephalothorax and abdomen.

* Insects have six legs; arachnids have eight legs.

* Insects have compound eyes; arachnids have simple eyes.

* Insects have antennae; arachnids do not.

* Many insects have wings; no arachnid has wings.

* Insects have mandibles; arachnids have chelicerae

* Insects undergo some form of metamorphosis; arachnids do not.

4 years ago

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