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Araneus diadematus
This was outside of Eco-friendly Topia Inn, Adams, Mass. He was facing backwards looking out so I had to photograph through the glass to get his front. "common and well-known orb-weaver spider" -wiki
Outside on window on front porch. Web was made attached between window panes.
Grass spiders build their webs on the ground in the grass as the name suggests. This looks to be one of the orb-weavers.
Thank you everyone for all the info. I did not know that about the wolf spider! Just after I wrote that, I looked up the wolf spider and I realized this and edited this spotting but it stayed for some reason.
@Martini---yes, agreed. Many of the identifications of wolf spiders on Project Noah show webs but I remember from my zoology class that they don't build webs. I think the term wolf spider has become a common name that is used for many species now.
@Holly---with a wolf spider they have a defining characteristic which is the eyes. They have a pair of eyes that are much larger than the rest of their eyes.
A wolf spider will never build a web. They run on the ground actively hunting for prey (like a wolf). This is one of a huge number of orb spiders that build a round (orb-shaped) web, and wait for some food to fly by.
This does not look like a wolf spider to me. Plus its web does not seem like the web of a wolf spider as they are more known to catch their prey in a predatory head-on way.