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Photo#1381994
Red Spider in Boulder, Colorado - Castianeira alteranda

Red Spider in Boulder, Colorado - Castianeira alteranda
Boulder, Boulder County, Colorado, USA
June 8, 2017
Size: Body about 1/2"
Seen mid-morning near the foothills of north Boulder. Kept raising its butt at me. One of the fastest moving spiders I've ever seen.

Images of this individual: tag all
Red Spider in Boulder, Colorado - Castianeira alteranda Red Spider in Boulder, Colorado - Castianeira alteranda

Moved
Moved from Castianeira.

Moved
Moved from ID Request.

Will check further,
but must be related to

Lovely image of a lovely creature!

 
Thanks!
Yes, I looked at lots of photos of Castianeira alteranda and I think you're correct.

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