4954 N. Shamrock Place, Tucson, AZ 85705


Aphonopelma chalcodes (most common Arizona species)


Physical Features

Tarantulas are hairy spiders with 8 legs, 2 body parts, and 8 eyes set close together. They have 2 large fangs under their abdomen. They are reddish-brown, dark brown or black in color. They are 1 to 5 inches in length, have a bald spot on abdomen, and urticating hairs. These hairs are rubbed on to predators for defense, which causes itching and rashes on their victims.

Life Cycle

Gradual metamorphosis
Males become sexually mature after several years. They are attracted to females by a scent she leaves on the web surrounding her burrow. Males will perform a courtship dance to attract the female, mating will occur, then the males die a few months later. Females lay eggs in a cocoon within her burrow and she guards the cocoon for 6-9 weeks until 500-1,000 spiderlings hatch. 2-3 weeks later young will leave the burrow. Female stores sperm and will continue fertilization the remainder of her 25 year life span.


  • Diet: Feed on insects, small spiders and small lizards by secreting juices with their fangs.
  • Activity: Nocturnal
  • Preferred Climate: Dry, Arid Enviroment
  • Defense: Make a hissing sound by rubbing their jaws, front legs or palps against each other. Urticating hairs. Faint webbing around perimeter of burrow.
  • Cautions: Tarantulas are not a threat to humans, tarantulas rarely bite or kick off hairs in defense. Clean bites with soap and water, and remove hairs with tape.
  • Home Invasion:¬†Burrows may be spotted when walking around the perimeter of a home. Tarantulas may occasionally enter a structure in search of food, but can be removed and relocated.

Helpful Hints

Recommend regular pest control service plan.

Interesting Facts

There are over 800 species of tarantulas worldwide including the largest spider known: the South American Goliath Bird Eating Spider reaches a body length with legs of up to 12 inches.


Tarantulas will try and bite if you mess with them.

Nesting Sites

  • Dark corners of storage closets or cabinets
  • Spaces behind furniture
  • Interiors of utility boxes or crawl spaces