arachnid ()
Arachnids, members of Arachnida, are a large class of arthropods, with most adults possessing multiple legs, multiple eyes, mandibles and/or other facial appendages such as chelicerae and pedipalps, and generally large and/or elongated abdomens. The most well known arachnids are spiders and scorpions.
Nearly all adult arachnids have 8 legs, differentiating them from general insects who typically have 6. Also, unlike insects, they lack antennae as well as wings. Their bodies are covered in a tough exoskeleton, some being covered in fur or hairs known as urticating hairs, used as a form of defensive irritant. Almost all arachnids are terrestrial, though a few live within freshwater and marine environments. Quite a few arachnids utilize various, similar defensive and hunting mechanisms, often related to piercing the skin of the predator or their prey with claws, pincers, stingers, or fangs. A lot of arachnids utilize this piercing alongside a form of venom.
Families, genera, and species
- arthropod
- arachnid
- acarine
- camel_spider
- harvestmen
- hooded_tickspider
- horseshoe_crab
- pseudoscorpion
- scorpion
- spider
- araneomorph
- diving_bell_spider
- huntsman_spider
- jumping_spider
- orb-weaver_spider
- recluse_spider
- spitting_spider
- theridiid
- thomisid
- wandering_spider
- wolf_spider
- jumping_spider
- mygalomorph
- trapdoor_spider
- vinegaroon
- whip_spider
Related
General anatomy
Other rankings
- tag group:species
- arthropod
- anomalocarid - Anomalocaris, etc.
- arachnid - Scorpion, spider, tick, etc.
- crustacean - Crab, lobster, shrimp, etc.
- insect
- myriapod - Centipede and millipede.