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Arachnids Portal | Britannica
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Arachnids
When it comes to creepy-crawlies, arachnids are some of the first critters that might come to mind. This arthropod group includes spiders, daddy longlegs, and scorpions, among other creatures that many of us would prefer to avoid.
Arachnids Encyclopedia Articles
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brown recluse
Brown recluse, (Loxosceles reclusa), species of venomous light tan or yellow spider most common in the western and southern United States. One of the most dangerous spiders in North America, the brown...
tarantula
Tarantula, (family Theraphosidae), any of more than 1,000 species and some 160 genera of hairy and generally large spiders, especially those found in the southwestern United States, Mexico, and tropical...
black widow
Black widow, (genus Latrodectus), any of about 30 species of comb-footed spiders distinguished by an hourglass-shaped marking on the abdomen and known for the venomous bite of the females. Black widows...
scorpion
Scorpion, (order Scorpiones or Scorpionida), any of approximately 1,500 elongated arachnid species characterized by a segmented curved tail tipped with a venomous stinger at the rear of the body and a...
spider
Spider, (order Araneae), any of more than 51,500 species of arachnids that differ from insects in having eight legs rather than six and in having the body divided into two parts rather than three. The...
tick
Tick, (order Ixodida), any of about 970 species of invertebrates in the order Ixodida that are obligate, blood-feeding parasites. Ticks are serious pests of large wild and domestic animals and are significant...
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