Spiders in Michigan

Michigan has more than 45 spider species out of which the brown recluse and northern black widow are considered the most poisonous.

Common spiders: Black and Yellow Garden (Argiope aurantia), Banded Garden (Argiope trifasciata), Ant-mimic (Castianeira longipalpa)

Largest spiders: Giant House (Eratigena atrica), Giant Crab (Olios giganteus), Carolina Wolf (Hogna carolinensis)

Highly Venomous Spiders

Cobweb (Theridiidae)

• Northern Black Widow (Lactrodectus variolus)
• Southern Black Widow (Latrodectus mactans)

Sicariidae

• Brown Recluse (Loxosceles reclusa)

Less Venomous Spiders

Orb-weaver (Araneidae)

• Cross Orb-weaver (Araneus diadematus)
• Shamrock Orb-weaver (Araneus trifolium)
• Six-spotted Orb-weaver (Araniella displicata)
• Bridge Orb-weaver (Larinioides sclopetarius)
• Orchard Orb-weaver (Leucauge venusta)
• Hentz Orb-weaver (Neoscona crucifera)
• Banded Garden (Argiope trifasciata)
• Black and Yellow Garden (Argiope aurantia)
• Arrow-shaped Micrathena (Micrathena sagittata)
• Araneus saevus

Amaurobiidae

• Black Lace-Weaver (Amaurobius ferox)
• Callobius bennetti

Nursery Web (Pisauridae)

• Dark Fishing (Dolomedes tenebrosus)
• Six-spotted Fishing (Dolomedes triton)

Agelenidae

• Giant House (Eratigena atrica)
• Barn Funnel Weaver (Tegenaria domestica)

Jumping (Salticidae)

• Bold Jumper (Phidippus audax)
• Tan Jumping (Platycryptus undatus)
• Zebra Back (Salticus scenicus)
• Bronze Jumper (Eris militaris)
• Dimorphic Jumper (Maevia inclemens)
• White-Jawed Jumping (Hentzia mitrata)
• Ant-mimic (Castianeira longipalpa)
• Euophrys monadnock
• Phidippus purpuratus
• Phidippus whitmani
• Sitticus fasciger

Wolf (Lycosidae)

• Tiger Wolf (Tigrosa aspersa)
• Carolina Wolf (Hogna carolinensis)
• Tigrosa helluo
• Trochosa ruricola
• Geolycosa missouriensis
• Gladicosa gulosa
• Hogna baltimoriana

Ground (Gnaphosidae)

• Eastern Parson (Herpyllus ecclesiasticus)

Crab (Thomisidae)

• Giant Crab (Olios giganteus)
• White-banded Crab (Misumenoides formosipes)

Cellar (Pholcidae)

• Long-bodied Cellar (Pholcus phalangioides)

Cobweb (Theridiidae)

• Triangulate Cobweb (Steatoda triangulosa)
• Steatoda borealis

Long-jawed Orb-weaver (Tetragnathidae)

• Tetragnatha versicolor

Running Crab (Philodromidae)

• Tibellus oblongus

Trachelidae

• Broad-faced Sac (Trachelas tranquillus)