About Argia moesta (Hagen, 1861)
The scientific name of this species is Argia moesta (Hagen, 1861). Males of this species have a blue tip at the end of the abdomen. Immature, freshly moulted (teneral) males range in color from tan to dark brown. They become darker as they age, and develop an almost complete whitish pruinose covering at maturity. Females occur in two forms defined by the color of the thorax: blue and brown. The thorax of all females has thin, hair-like dark shoulder stripes. Blue form females of Argia moesta are very similar to female blue-fronted dancers. A reliable characteristic to separate the two species is the number of cells located below the stigma: Argia moesta has two cells below the stigma, while the blue-fronted dancer has one.
