This field guide is the one to own. It covers not only all the dragonflies of Texas and the Southcentral US, but all the damselflies as well. The photographs are superb and this make for easy identification of species in the field. However, because of these pluses, the result is a rather sizable guide that is just a bit too heavy to really qualify as a handy field guide. If you can deal with its size and weight, it more than makes up for this handicap in thes helpful information it provides. The only drawback and the reason I gave it 4 stars instead of 5, is because it is a tad less user friendly for the novice or non-professional (i.e. The species identification keys are a bit confusing). Nevertheless, it is destined to become the standard to measure all other guides.