The western red damsel is identifiable by its small size and red and black coloration. The body length varies from 0.9 to 1.1 inches. The thorax is red with black front. The abdomen is mostly red with some black markings at the end. The female is similar to the male but duller and with no black on the thorax. The red damsels have short black legs. The coloration darkens in some areas as the red damsels get older. Currently, there are two named species of red damsel in North America: the eastern red damsel (Amphiagrion saucium) and the western red damsel. Specimens from the Midwest, including Wisconsin, are morphologically intermediate between these two similar species. Wisconsin specimens appear to more closely resemble the western species, but more taxonomic work on this genus is needed.
This species is usually found at springs, seepages, spring-fed bogs, and spring-fed runs. It is known throughout the western and central United States and parts of Canada. These small stout red and black damselflies do not seem to wander far from their breeding habitats. It is widely, though locally, distributed throughout Wisconsin in appropriate habitats.
Late May to mid-July in Wisconsin.