Spiders in Oregon

Oregon houses more than 500 spider species with about 20 to 30 of them being unique belonging to prominent families. Most of them are small, dwelling in rotten logs, forest litter, and rock crevices. Most are harmless barring the widow and yellow sac being potentially dangerous to humans.

Common spiders: Mouse (Scotophaeus blackwalli), Goldenrod Crab (Misumena vatia), Hobo (Eratigena agrestis)

Largest spiders: Hobo (Eratigena agrestis), Giant House (Eratigena atrica)

Spiders in Oregon Identification Chart

Highly Venomous Spiders

Cobweb (Theridiidae)


Less Venomous Spiders

Orb-weaver (Araneidae)

Cobweb (Theridiidae)

Nursery Web (Pisauridae)

Wolf (Lycosidae)

Jumping (Salticidae)

Crab (Thomisidae)

  • Goldenrod Crab (Misumena vatia)

Huntsman ( Sparassidae )

  • Giant Crab (Olios giganteus)

Cellar (Pholcidae)

Funnel Weaver (Agelenidae)

Ground (Gnaphosidae)

  • Mouse (Scotophaeus blackwalli)
  • Sergiolus montanus