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

Highly Venomous Spiders

Sicariidae

• Brown Recluse (Loxosceles reclusa)

Cobweb (Theridiidae)

• Southern Black Widow (Latrodectus mactans)

Less Venomous Spiders

Orb-weaver (Araneidae)

• Red-spotted Orb-weaver (Araneus cingulatus)
• Marbled Orb-weaver (Araneus marmoreus)
• Yellow Garden (Argiope aurantia)
• Banded Garden (Argiope trifasciata)
• Furrow Orb-weaver (Larinioides cornutus)
• Bridge (Larinioides sclopetarius)
• Spined micrathena (Micrathena gracilis)

Nursery Web (Pisauridae)

• White-banded Fishing (Dolomedes albineus)
• Six-Spotted Fishing (Dolomedes triton)
• Dark Fishing (Dolomedes tenebrosus)

Ground (Gnaphosidae)

• Sergiolus capulatus

Cobweb (Theridiidae)

• Steatoda borealis

Jumping (Salticidae)

• Bold Jumper (Phidippus audax)
• Tan Jumping (Platycryptus undatus)
• Zebra Back (Salticus scenicus)
• Dimorphic Jumper (Maevia inclemens)

Cellar (Pholcidae)

• Long-bodied Cellar (Pholcus phalangioides)

Corinnidae

• Broad-Faced Sac (Trachelas tranquillus)

Agelenidae

• Barn Funnel Weaver (Tegenaria domestica)

Wolf (Lycosidae)

• Tigrosa helluo
• Trochosa ruricola
• Trochosa terricola