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Photo#628388
spiderlings are hatching

spiderlings are hatching
Clark's Creek Park, Puyallup, Pierce County, Washington, USA
April 7, 2012
Size: 1 mm

Images of this individual: tag all
egg sacs on cottonwood spiderlings are hatching spiderlings are hatching

Similar to Drapetisca?
Shot in the dark, but I happened to pass through Drapetisca alteranda on accident and noticed some similarities in abdomen shape, leg banding, darker color of the ring around the front of the abdomen, and the black 'Y' shape on the carapace.

I wonder what the egg sac of that species looks like and if it's anything close to this? Kaston (Spiders of Connecticut) says that D. alteranda is common on tree trunks.
(1) lists a previously unpublished record of D. alteranda in WA but not sure what county or anything. Rod would probably know since he helped write that checklist.

 
Yes
They certainly do look similar. There were so many of these on the tree trunks that I would expect it to be a very common species in that area, which I don't think is the case.

Moved
Moved from Spiders.

Cute!
Is this a molt after the last shot?

 
I'm not 100% sure but
there are skins in the container.

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