There are over 95 spider species indigenous to Alabama distributed in the north, south and central parts of the state, of which approximately seven to eight of them are considered potentially harmful. The brown recluse, known to be one among the most dangerous spider species of the United States of America because of its deadly venom, occurs throughout the state, though more common in the northern part.
Common spiders: Brown Recluse (Loxosceles reclusa), Black Widow (Latrodectus hesperus), Long-bodied Cellar (Pholcus phalangioides)
Largest spider: Brazilian Wandering (Phoneutria nigriventer)