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Arthropods
Arthropods are a group of invertebrates that includes insects, crustaceans, arachnids, sea spiders, horseshoe crabs and a number of lesser-known groups. There are over 1 million species of arthropods alive today, with the most diverse group being, by far, the insects. The articles listed below provide information about the characteristics, classification and evolution of arthropods.
Arthropods
Arthropods are the most species-rich group of animals, accounting for over three-quarters of all currently known living and fossil organisms. In this article, we'll explore basic facts about arthropods including how they are classified, what they eat, where they live and the characteristics that make them different from other invertebrate groups.
Arthropod Pictures
Pictures of arthropods, including spiders, scorpions, horseshoe crabs, katydids, beetles, millipedes and more.