Spiders in Maryland

Maryland has about 30 to 35 species with the black widow being the only venomous spider present here. The brown recluse is said to thrive here though its population is rare.

Common spiders: Northern Black Widow (Latrodectus variolus), Southern Black Widow (Latrodectus mactans), Common House (Parasteatoda tepidariorum), Yellow Garden (Argiope aurantia) species of Jumping (Salticidae), and Nursery Web (Pisauridae) spiders  

Largest spiders: Species of Wolf (Lycosidae) and Fishing (Dolomedes) family

Spiders in Maryland Identification Chart

Highly Venomous Spiders

Cobweb (Theridiidae)

  • Northern Black Widow (Latrodectus variolus)
  • Southern Black Widow (Latrodectus mactans)
  • False Widow (Steatoda grossa)


Less Venomous Spiders

Orb-Weaver (Araneidae)


  • Bowl and Doily (Frontinella pyramitela)
  • Filmy Dome (Neriene radiate)


Jumping (Salticidae)

Cobweb (Theridiidae)

  • Common House (Parasteatoda tepidariorum)
  • Triangulate Cobweb (Steatoda triangulosa)
  • Steatoda borealis
  • Theridula emertoni


Crab (Thomisidae)

Wolf (Lycosidae)

Nursery Web (Pisauridae)

Woodlouse Hunter

Ground (Gnaphosidae)


  • Hibana gracilis


  • Strotarchus piscatorius