Photo Details
January 9, 2006, Draper, Salt Lake County, Utah- ©Nicky Davis

Family tree
Family:  Agelenidae Genus: Agelenopsis   Species: Aperta (?) There are 85 species of Agelenidae in N. America

Other
About 1 1/2 inch long including legs. Based on the long posterior spinnerets and the eye pattern, it's a funnelweb spider--family Agelenidae. (Yours may be one of the species that only occurs in the western U.S., including Utah--A. aperta. Based on the body and leg proportions, your individual is a female. (J.R.)
http://research.amnh.org/entomology/blackrock2/families/agelenidae.htm



More interesting facts at:
Funnel web spiders (Agelenidae) are recognizable by their long posterior spinnerets:
http://research.amnh.org/entomology/blackrock2/pictures/spider_images/galleries/agelenidae/agelenopsis_dorsal&ventral.htm
http://research.amnh.org/entomology/blackrock2/families/agelenidae.htm