Crab Spider / Philodromus rufus


This is a running crab spider - technically a member of the Philodromidae family of spiders. These are found pretty much everywhere in the world.

We believe that more specifically it is a type of crab spider called a Philodromus rufus from what we can tell! I call this a "tick spider" because its body looks tick-like to me. It's much more friendly than a tick, though!

It is less than an inch in diameter. It was found on our back porch in Sutton.

Apparently the reason spiders have those "dimples" on their backs has to do with their internal organs. They don't have a skeleton. The way organs are held in place are with thin "guy wires" which attach to various parts of their body and then support the organs. So those dimples are one of the internal attachment points for a wire, that is holding up an internal organ.

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Another one, taken in a different year!

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

Crab Spider / Philodromus rufus

More Running Crab Spider Photos

Conquering Your Fear of Spiders
Do spiders cause you stress? Many cultures treasure spiders as bringing luck and wealth! Learn to conquer your fear of spiders. Bring serenity and joy into your life. It all starts with the first step!


Spiders in Sutton Massachusetts
Animals and Birds in Sutton Massachusetts

Sutton Massachusetts Photo Collection

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