There are different spider species indigenous to Washington of which the most dangerous are the false widow and the brown widow . The northern yellow sac is said to be mildly venomous. The wolf spider is said to thrive in most regions of Washington DC.
Common spiders: Hobo (Eratigena agrestis ), Common House (Parasteatoda tepidariorum ), Barn Funnel Weaver (Tegenaria domestica )
Largest spiders: Giant House (Eratigena atrica ) and spiders of the Wolf (Lycosidae) family
Spiders in Washington Identification Chart
Highly Venomous Spiders
Sicariidae
Cheiracanthiidae
Cobweb (Theridiidae)
Less Venomous Spiders
Orb-weaver (Araneidae)
Jumping (Salticidae)
Funnel Weaver (Agelenopsis)
American Grass (Agelenopsis potteri ) Hobo (Eratigena agrestis ) Giant House (Eratigena atrica ) Barn Funnel Weaver (Tegenaria domestica )
Wolf (Lycosidae)
Amaurobiidae
Cellar (Pholcidae)
Cobweb (Theridiidae)
Candy Striped (Enoplognatha ovate ) Rabbit Hutch (Steatoda bipunctata ) Triangulate Cobweb (Steatoda triangulosa )Common House (Parasteatoda tepidariorum )
Crab (Thomisidae)
Sheetweb (Stiphidiidae)
Eared Dome Sheet-web (Neriene digna )
Actinopodidae
Eastern Mouse (Missulena bradleyi )
Spitting
Ground (Gnaphosidae)