Arthropod Comparison Chart

Flashcards reviewing the characteristics of Chelicerata, Myriapoda, Crustacea, and Hexapoda.

Name three species of Chelicerata.

Spiders, scorpions, and ticks

Name two species of Myriapoda.

Centipedes and millipedes

Name three species of Crustacea.

Crabs, lobsters, and shrimp

Name three species of Hexapoda.

Beetles, flies, and ants

Describe the legs of Chelicerata.

8 jointed legs (4 on each side)

Describe the legs of Myriapoda.

Centipedes: Up to 100 legs (1 leg per body segment); Millipedes: Up to 1000 legs (2 legs per body segment)

Describe the legs of Crustacea.

4 pairs of walking legs; King crab has 3; 1 pair of claws

Describe the legs of Hexapoda.

6 jointed legs (good for jumping and grasping)

Describe features of Chelicerata appendages

Chelicerae for piercing; Pediparts for sensing/reproduction

Describe features of Myriapoda appendages

Antennae for sensing and mandibles for feeding

Describe features of Crustacea appendages

Chelipeds with pincers and 2 pairs of antennae

Describe features of Hexapoda appendages

1 pair of antennae and up to 2 pairs of wings

How do Chelicerata breathe?

Book lungs

How do Myriapoda breathe?

Tracheal system with spiracles throughout the body

How do Crustacea breathe?

Aquatic species: Gills; Terrestrial species: Specialized structures

How do Hexapoda breathe?

Tracheal tubes with trachals

How do Chelicerata eat?

Predators that use venom and scavengers

How do Myriapoda eat?

Centipedes: Omnivores; Millipedes: Herbivores

How do Crustacea eat?

Filter feeders, scavengers, and predators

How do Hexapoda eat?

: Herbivores, carnivores, and scavengers; some use mandibles

What are some unique traits of Chelicerata?

Lack antennae and have a 2-part body (cephalothorax and abdomen)

What are some unique traits of Myriapoda?

Some centipedes are venomous, and some millipedes have poison

What are some unique traits of Crustacea?

Some regrow lost appendages and their exoskeleton is filled with calcium

What are some unique traits of Hexapoda?

Metamorphosis and diverse appearances; most species of any group