About this photo:

Taken right outside our sun room, using a new closeup macro lens. This is probably Archaearanea tepidariourum, the common house spider, though other Archaearanea species are possible.

I had tried many times to get a decent photo of this small spider, but had to wait until I had a close-up macro lens. The body of the spider is about 5-6 mm in size. To the naked eye, it appears as a brown blob.

According to Jackman, this is "probably the spider most often observed by humans in the United States." It is responsible for the cobwebs you see around the house.