Wisconsin Odonata Survey

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Enallagma carunculatum  Morse, 1895
Tule Bluet


Coenagrionidae, Pond Damsel Family

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:

Global: G5     Wisconsin: S5    

Distinguishing Characteristics:

The male of this species is an intermediate-type bluet because of roughly equal amounts of blue and black on the abdomen. It is similar to the familiar bluet in the field. The body length varies from 1.0 to 1.5 inches.

Description of Habitat/Range:

The tule bluet is found throughout from southern Canada to Mexico. It is very common in Wisconsin. It is usually found at rivers, lakes, and occasionally ponds.

Flight Season:

Typical flight season is from late May to mid-September in Wisconsin.


Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
3%
(19)
20%
(141)
37%
(259)
29%
(199)
11%
(73)
<1%
(3)
Shading illustrates monthly percentages of the total flight season records for the species. Each flight season record is a unique date/location/observer combination where one or more adult or an exuvia was recorded (excludes nymphs). The actual number of flight season records for each month is shown in parentheses.

Flight seasons begin earlier in the southern part of the state, often by a week or more. Also, flight charts may not be accurate for rare species because of few data available.
View user-submitted photos

(Click on photos to enlarge)
Photo of Male tule bluet
Male tule bluet. © Dan Jackson

Male tule bluet
Photo of Male tule bluet
Male tule bluet. © Dan Jackson

Male tule bluet
Photo of Male abdomen tip in side view showing the cercus (upper part of clasper) with pale tubercle at tip
Male abdomen tip in side view showing the cercus (upper part of clasper) with pale tubercle at tip. © Willson Gaul

Male abdomen tip in side view showing the cercus (upper part of clasper) with pale tubercle at tip
Photo of Immature male tule bluet
Immature male tule bluet. © Dan Jackson

Immature male tule bluet
Photo of Female tule bluet
Female tule bluet. © Dan Jackson

Female tule bluet
Photo of Olive-form female tule bluet
Olive-form female tule bluet. © Dan Jackson

Olive-form female tule bluet
Photo of Immature female tule bluet
Immature female tule bluet. © Dan Jackson

Immature female tule bluet
Photo of Tule bluet pair
Tule bluet pair. © Dan Jackson

Tule bluet pair



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