Funnel Web Grass Spider

Description:

It was maybe two inches from leg to leg. The second picture is his underside. It has some reddish coloring in his legs and on the top of its body. There are spines at the bottom. You can see the funnel in the two pictures of its web.

Habitat:

Found him out in the woods. We live in the Ozark foothills.

Notes:

I've identified it based on web search results from various sites, but I welcome a link or two to verify or correct this. Its body was fatter than the other images I've found. Is this possibly a pregnant female?