Spiders in Pennsylvania

Of the several spider species found in Pennsylvania, the black widow seems to be one of the commonest, mostly thriving outdoors. The brown recluse is spotted sometimes, though not frequently since they find it difficult to cope with the diverse climatic conditions. The majority of the species frequents the state during autumn.

Common spiders: Southern Black Widow (Latrodectus mactans), Yellow Garden (Argiope aurantia), Marbled Orb-weaver (Araneus marmoreus)

Largest spiders: Members of the Wolf (Lycosidae) family

Spiders in Pennsylvania Identification Chart

Highly Venomous Spiders


Cobweb (Theridiidae)

  • Southern Black Widow (Latrodectus mactans)

Less Venomous Spiders

Orb-weaver (Araneidae)

Nursery Web (Pisauridae)

Ground (Gnaphosidae)

  • Sergiolus capulatus

Cobweb (Theridiidae)

Jumping (Salticidae)

Cellar (Pholcidae)



Wolf (Lycosidae)

  • Tigrosa helluo
  • Trochosa ruricola
  • Trochosa terricola