Knowledgebase
What is this spider? #868751
Asked May 16, 2024, 3:32 PM EDT
This guy is running back and forth in my kitchen window, acting like he'd like to be outside. He's about 1/2" or more, very fast. I'd like to catch him and put him outside to feast on some bugs.
Weld County Colorado
Expert Response
You have observed the Bold Jumping Spider (Phidippus audax).
On May 16, 2024, at 7:56 PM, Ask Extension <<personal data hidden>> wrote:
Hello,
Thank you for contacting Ask Extension. My name is Kat, and I’ll be helping you today.
From the pictures you included, this appears to be a jumping spider. Generally harmless & beneficial.
If you were able to capture it and return it to the outside, it will happily hunt & feast on pests in your garden.
The CSU Fact Sheet below includes pictures of spiders commonly found here in Colorado. The jumping spider in Figure 5 most closely resembles the one you found.
CSU Fact Sheet 5.512 – Spiders in the home
https://extension.colostate.edu/topic-areas/insects/spiders-in-the-home-5-512/
Please review and if you have additional questions on this or another topic, feel free to contact us.
Thanks,
Kat
