Coenagrionidae, Pond Damsel Family
"Most Wanted" Species
The bluets form a group of about 17 similar species in Wisconsin in which the males usually share the characteristics of having blue and black stripes on the thorax, and blue and black markings on the abdomen. In-hand examinations are usually needed to identify them, although they can be grouped into subcategories based on the amount of black showing on the abdomen. Males are easily identified, under magnification, by the shape of their terminal appendages. Females are generally duller than males, and they are more difficult to identify, which is accomplished by subtle differences in the shape of the mesostigmal plates on the top of the thorax. Generally, males are bright blue while the females are green or yellow-green or blue. There are some species that are yellow-orange, a mix of various colors, or black with some blue.
Status-Global/State:
Distinguishing Characteristics:
The male of this species is a blue-type bluet because of its predominantly blue abdomen. One of the smallest bluets, the length of the body varies from 0.8 to 1.1 inches. The male is bluish with a blue face. The thorax is blue but the front is black with thin blue stripes creating double blue stripes. The female is similar but the pale colors are more extensive and usually tan.
Description of Habitat/Range:
Found in United States, this species prefers ponds with little emergent vegetation, sheltered coves of lakes and along slack stretches of streams. In Wisconsin, it is known from just a few southeastern counties.
Flight Season:
The flight season is from late May to late September in Wisconsin.
(Click on photos to enlarge)
