Needham's Skimmer dragonflies (males)

I spotted several red dragonflies (males). I wasn't sure whether the dragonflies were Golden-winged Skimmers or Needham's Skimmers. I consulted Richard Orr -- renowned Odonata expert http://www.marylandinsects.com/ -- for help in identifying the red dragons I saw. According to Richard, "If you were on the [Atlantic] coastal plain the chances are that you were seeing Needham’s Skimmers and not Golden-winged [Skimmers]. However that does not work 100% of the time." A range map for Needham's Skimmers supports Richard's speculation: http://bugguide.net/node/view/15576/data "Needham's Skimmer" is named after James Needham, author of the classic reference book, _Dragonflies of North America_ (out of print).