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Arthropods: Wide Variety of Species
Arthropod classes
INSECTA
- 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.
CRUSTACEA
- 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.
ARACHNIDA
- 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,
CHILOPODA
- 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.
DIPLOPODA
- 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
MEROSTOMATA
- Body covered by a hard shell.
- They have aquatic life.
- Breathing through gills.
Example: Limbs.
ENTOGNATHA
- They have no wings.
- These arthropods are very small.
- They have no wings.
- Have musculature in each segment of the antennas.
Example: Collemboli.
