Nebraska Dragonflies and Damselflies

Division of Entomology

River Bluet

Enallagma anna

Williamson, 1900

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The River Bluet is blue marked with black, as are many of our Bluet species. Its thorax is blue with a narrow, tapering black shoulder stripe. The amount of black on the abdomen increases incrementally from segments 2 through 7. The abdomen tip is blue. The females may be pale blue or pale tan.

It is a fairly common western species whose range extends into Iowa but not south of Nebraska or north of southern South Dakota. It is nearly state-wide in Nebraska, except for the southern counties. It is foundin a great variety of small streams, even drainage ditches, andoccasionally in ponds, and in the eastern counties it is frequently found in streams with Familiar Bluet.

River Bluet
River Bluet

Size: 29-36 mm (1.1-1.4 in)

Habitat: slow streams and rivers

Great Plains Range: NE, SD, NM, CO, WY, MT, IA

Flight season: late May to late August

River Bluet map

Green indicates accepted county record (specimen or photograph).
Yellow indicates sight record only.


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