Wolf Spiders

• Wolf spiders have a variety of markings on their backs.Jupiterimages/Photos.com/Getty Images
  
  Wolf spiders are hunting spiders that do not build webs. The prefer living outdoors, but may be found living in basements and other quiet areas of homes that are likely to provide them with insects to eat. These spiders have long, oval bodies and long legs. Several species of wolf spider are brown. Some of these spiders may have white abdomens or faint white markings on their backs. Though a bite from a wolf spider is painful, their bites will only cause localized swelling and are not life threatening.
  
  

Jumping Spiders

• Jumping spiders have excellent vision.Jupiterimages/Photos.com/Getty Images
  
  Jumping spiders are frequently found in the Northeast. These spiders are easily differentiated from other spiders by their round bodies, large eyes and very hairy legs. Several species are tan with white hair that gives the appearance of a white back. They can jump up to 40 times their own height and may look intimidating, but are not venomous or aggressive.
  
  

Orb Weavers

• Orb weavers may have yellow, orange, red or white backs.Photos.com/Photos.com/Getty Images
  
  Orb weavers are frequently found in sunny locations and in gardens. They build large, spiral-shaped webs which they rarely leave. These spiders can be identified by their rounded, hard bodies, small heads and long, jointed legs. Several species of orb weavers have tan or brown bodies with white markings or completely white backs. They are not venomous or aggressive.
  
  

Nursery Web Spiders

• Nursery web spiders build webs strictly for the purpose of laying eggs and are frequently found near bodies of water. They eat aquatic insects and small fish, and can walk across the top of water. These spiders have long, slender legs and drab colored bodies. Several species of nursery web spiders are tan with white backs and white stripes on their legs.