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Species Thanatus formicinus

Running Crab Spider - Thanatus formicinus Adult Male - Thanatus formicinus - male Running Crab Spider - Thanatus formicinus spider - Thanatus formicinus spider - Thanatus formicinus wolf spider? - Thanatus formicinus Spider - Thanatus formicinus - female Thanatus in Aurora  - Thanatus formicinus - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Philodromidae (Running Crab Spiders)
Genus Thanatus
Species formicinus (Thanatus formicinus)
Identification
Female:

Female has two prolateral spines on femur I.

Male:

Range
New England southwest to Alabama and west to the Pacific. All of Canada and Alaska. (1)
Works Cited
1.How to Know the Spiders
B. J. Kaston. 1978. WCB/McGraw-Hill.