What spiders in Texas are poisonous?
Although all true spiders have venom glands, not all venoms produced are very poisonous to humans. In fact, only two spiders in Texas are known to have the potential to commonly cause severe reactions: the brown recluse and the black widow. However, any spider bite could cause a reaction, especially if you are hypersensitive to that particular venom. See also the Medically Important Arthropods page for more information and pictures.