Nebraska Dragonflies and Damselflies

Division of Entomology

Arroyo Bluet

Enallagma praevarum

Hagen, 1861

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The Arroyo Bluet is a western species which looks much like the River Bluet. The male is blue and black, with narrow shoulder stripes. Abdominal segments 8 and 9 are blue. The female may be pale blue or tan.

This is a western species just reaching western Nebraska, where it is uncommon. It is recorded only from scattered Panhandle counties plus Keith and Dundy. There are about equal numbers of records from clear to sluggish and almost stagnant ponds and streams. It is easily confused with River Bluet.

Arroyo Bluet male

Size: 27-35 mm (1.1-1.4 in)

Habitat: ponds and streams

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

Flight season: early July to early September

Arroyo Bluet map

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


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