Nice shot. What was the outcome?
After a little consideration, the spider withdrew. That isn't always the case, these guys don't spin a web they will grab another insect and just envenomate them and hang on for the ride. It's usually a short one.
I'm often surprised when I find them in an image after I have taken the shot, gone home and started sorting the wheat from the chaff. Here is a gross overcrop of a Southerling Skipper in which a Thomisidae suddenly appeared.
Aggressive looking spider, as for the image well captured.
Grahame
Really nice image. Great capture of a little drama.
Clive
Great images,well captured!