I would like to suggest maybe a female Common Darter as the legs look black and yellow striped, they are very similar to the Ruddy Darter though,
I think emg's identification is correct - a female common darter.
There is a yellow longitudinal line on the outer surface of the black legs - this is a seperator between the common and ruddy. Common's have a stripe, Ruddy's don't.
The brown thorax with yellow side patches, straw coloured abdomen with black side darts indicate a female.
Another characteristic to help separate the two (not shown in the pix), is the colour of the wing roots. Saffron yellow in Ruddy Darter (m & f), red in Common (m).