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Bold Jumper - Phidippus audax - female

Bold Jumper - Phidippus audax - Female
Puyallup, Pierce County, Washington, USA
March 15, 2010
Size: around 20 mm
This is the largest Bold Jumper I've ever seen. It was eating a bold jumper that is about the size I'm used to seeing. Note the split white mark on the back. I wonder if that used to be one spot and split as the abdomen extended.

This is an outdoor population that lives on fences and retaining walls near a retention pond.

Did you collect her? Maybe she'll produce an extra-large egg sac.

Sometimes an individual spider will go through an extra instar, and end up being larger than average as an adult (Morse mentions this in his book on Misumena vatia).

As usual it was just me & the camera. I need to order more vials.

I didn't even know there *were* bold jumpers up there. All I remember from childhood in Oregon was P. clarus. Is this species a fairly recent addition to the fauna there?

I'll have to ask Rod
They've been here since I've been here, but that hasn't been too long.

From Rod
In our state, P. audax (which first appeared in eastern WA in 1978, in
western WA around 1990) is mainly a house spider. It's quite a common
house spider in eastern WA cities but very spottily distributed on the
west side.

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