Philodromidae
Running Crab Spiders

Diagnostic Features:

They have two claws and flat bodies. They look much like ordinary crab spiders (Thomisidae) with an elongated abdomen and flat body. Their second leg is longer than the others.

 

Family Distribution:

They are found worldwide with some species being transcontinental. They adapt well to man made structures and have been known to invade cricket farms.

 

Interesting Natural History Notes:

These spiders are predators, seeking their prey in vegetation or on coniferous or deciduous trees. They can exist in both tundra environments and the desert.

 

Origin of Latin Name:

From Greek roots, meaning “lover of the race (course)”

 

Genera found in the Northeastern United States:

Thanatus, Tibellus, Philodromus, Ebo