Great Blue Skimmer

Face is white. The thorax is brown with a narrow white middorsal stripe and the sides are pale grayish-white with a dark stripe along the third lateral suture that is obsolete at its lower end. The wings are clear with a narrow dark stripe basally and a small spot at the nodus. The wingtips are dark. The femora are pale over their basal half with the remaining length, tibiae and tarsi black. The abdomen is yellow with a black middorsal stripe. The mature males develop a pruinose pale blue color first on the front of the thorax then on the abdomen. The yellow on the abdomen of mature females becomes brown.