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Libellula needhami
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).
"Paul Spring Park," one of seven small parks owned and maintained by the Community Association of Hollin Hills (CAHH), Fairfax County, Virginia USA. Paul Spring, a small stream, flows through the park year-round. Related Resource: http://waltersanford.blogspot.com/2010/1...
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