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Photo#163421
Shamrock Spider - Araneus diadematus - female

Shamrock Spider - Araneus diadematus - Female
Town of Baileys Harbor, Hidden Corners Sanctuary, Door County, Wisconsin, USA
October 8, 1995
Adult hanging in vegetation along pond pathway. I think its a female.

Moved
Moved from Shamrock Spider.

Yes, looks like the female
but we would suggest Araneus diadematus instead. See what you think.

 
Spider ID
I checked with Steve Krauth, Curator at the UW-Madison Research Collection and he agrees with my ID. He sent me this URL: http://spiders.entomology.wisc.edu/Araneidae/Araneus_trifolium/index.html I'm also checking with Mike Draney, a spider expert out of UW-Green Bay.

 
The spider in your link is indeed A. trifolium
but unfortunately that's not the spider in your image. Araneus are notoriously difficult and variable spiders, but look at a dozen trifolium and another dozen diadematus, such as in the compilation John gathered for you below, and you will agree, we think, that your spider is diadematus. The next spider you posted was indeed a trifolium, an unusual all white form.

 
More google images

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