Twin-spotted Spiketail (Cordulegaster maculata)
Above: A Twin-spotted Spiketail (Northern form) in Garrett Co. (6/9/2007).
Below: A Twin-spotted Spiketail in western Garrett Co., Maryland (6/14/2008).
Below: A Twin-spotted Spiketail in Garrett Co., Maryland (6/12/2011).