Verrucosa arenata, the Arrowhead orbweaver;
Volusia county, Florida (09 May 2015).
I’ve never managed get a great photograph of an Arrowhead orbweaver, but this one is clear enough for me. It was a good moment, a good experience. As for this species, the Arrowhead orbweaver is fairly common throughout Florida but less commonly notice or observed. It is, as you might imagine, fairly tiny and easy to miss. They’re pretty good about stealthily slinking around in plain sight.