This female Claret Pondhawk Erythemis mithroides was at Bentsen-Rio Grande State Park/WBC on June 15, 2008 in Hidalgo county, Texas:
In the image below - the first shot I got - the angle is such that the tip of the ovipositor (projecting from below S8 but angled so that its tip is under S9) is just visible (see white arrow):
A flash photo:
