Early morning while they're still dew-covered is definitely the time to get dragonflies & damselflies - see the dew-covered back..
I actually preferred the dalhlia that I shot right before coming in the door after 2 hours out in soaking heat & humidity - but put it here instead http://www.pbase.com/ed_k/image/46385988 My wife helped to break my mental tie - surprising because she doesn't care for "bug pictures".