Insects

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Insects
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• Insects are small animals with six legs. Insects
  use their legs to run, walk, jump, dig, and even
  sing!

Katydid
Roach
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• There are approximately five million different
  kinds of insects in the world.

Assassain Bug
Housefly
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• All insects have 3 main body parts a head, a
  thorax, and an abdomen.

Ant
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The Insects Head

• The head bears the antennae, eyes, and mouthparts.

Honeybee
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The Insects Thorax

• The thorax bears the legs and wings.

Damselfly
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The Insects Abdomen

• The abdomen, the last division, contains the
  digestive and reproductive systems.

Praying Mantis
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• Insects have a hard covering because they wear
  their skeletons on the outside of their bodies.

Tiger Beetle
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• All insects begin their lives as eggs.

Eggs of the Harlequin Bug
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The Life Cycle of Insects

• Some insects grow by simple growth. The insect
  only gets bigger.

Silverfish
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• Some insects grow by incomplete change. The
  insect gets bigger and grows wings.

Grasshopper
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• Some insects grow by complete change. The insect
  looks a lot different from when it was born.

Viceroy Butterfly
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• Both butterflies and moths grow in this way.
• They have 4 stages of growth.
• The stages are egg, larvae, pupa, and adult.

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Egg
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Larvae
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Pupa
Moth - cocoon
Butterfly - chrysalis
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Adult
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• Butterflies and moths look very similar, but
  there are ways to tell them apart.

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Antennas

• Butterfly The antennas are straight with knobs
  on the end.
• Moth The antennas look like small feathers.

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Activity

• Butterfly It is usually active during the day.
• Moth It usually rests during the day and is
  active at night.

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Wings

• Butterfly It rests with its wings standing up.
• Moth It rests with its wings laying flat.

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• Most insects live short lives. Some adults
  insects only live a few hours.

Mosquito
Firefly
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• Some insects may be pests.
• Insects can damage valuable crops and trees.

Cockroaches
Aphids
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• Many insects help humans be eating other insects
  that destroy crops.

Ladybug
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• Insects are a crucial food source for many
  animals that are valuable to us.

Rainbow Trout
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• Insects pollinate many of the plants that provide
  food for us.

Bee
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• Useful products such as honey, beeswax, and silk
  are produced by insects.

Honey
Silk
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• Insects are an important part of our world.