Arthropod Classification

Arthropod Classification

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Arthropods: Wide Variety of Species

Arthropod classes


- Insects have terrestrial life.

- The body is divided into head, chest and abdomen.

- Hexapods: have six legs.

- They have a pair of antennas.

- They have tracheal breathing.

Examples of insects: bees, flies, mosquitoes, cockroaches, bed bugs, butterflies, dragonflies and wasps.


- Most crustaceans live in fresh or salt water.

- The body is divided into cephalothorax and abdomen.

- The number of legs varies by species. They can have five pairs or more.

- They have two pairs of antennas.

- The breath of the crustaceans is gill.

Examples: shrimp, crab, barnacle, garden stick, crab and lobster.


- Arachnids have terrestrial life.

- The body is divided into cephalothorax and abdomen.

- They have eight legs (octopods).

- They do not have antennas.

- The breath is pulmonary thrombus.

- Many produce poison to attack prey or defend themselves from predators.

Examples: scorpions, spiders, ticks,


- Earthly life.

- Body divided into head and trunk.

- Presence of many legs, one pair in each ring.

- They have a pair of antennas.

- Breathing is tracheal.

- They feed mainly on larvae and beetles.

Examples: centipedes and centipedes.


- They have terrestrial life.

- Tracheal breathing.

- Body composed by head, trunk and two tagmas.

- Food based on remnants of vegetable organic matter.

Example: snake louse


- Body covered by a hard shell.

- They have aquatic life.

- Breathing through gills.

Example: Limbs.


- They have no wings.

- These arthropods are very small.

- They have no wings.

- Have musculature in each segment of the antennas.

Example: Collemboli.