Taken on Lake Creek Trail in northwest Austin (Williamson County, TX).

I was excited to find this yellowish damselfly with a blue abdomen tip in a patch of woods by a pond on Lake Creek today. I did not recognized it. After looking through my Damselflies of Texas field guide I think it's a Vesper Bluet. The guide says this is mostly a nocturnal species, so it's interesting I stumbled upon it in the middle of the morning.