Araneae, commonly known as spiders, are arachnids characterized by eight legs, two body segments, and no antennae. They are found in various habitats worldwide, from forests to deserts, and play a crucial role in controlling insect populations. Spiders are known for their silk production, which they use to create webs for trapping prey, building shelters, or laying eggs. There are over 48,000 species of Araneae, each exhibiting unique behaviors and adaptations, making them a diverse and fascinating group within the animal kingdom.