There are two types of poisonous spiders found in Florida, recluse spiders and widow spiders. No species of the recluse spider is native to Florida, but three have established populations in various locations throughout the state. There are four types of widow spiders in Florida, including the brown widow, the red widow, the southern black widow and the northern black widow.
Both recluse spiders and widow spiders hide underneath household objects such as firewood, boxes and clothing unused for some time, which makes them hard to notice. Bite symptoms of widow spiders include muscle cramping, intense pain, hypertension and vomiting. The most common symptoms of bites from a recluse spider include blisters, severe pain, swelling and a bluish area surrounding the blister.