Nebraska Dragonflies and Damselflies
Gomphus (Gomphurus) externus
Hagen in Selys, 1858
The Plains Clubtail (subgenus Gomphurus) is widespread across Nebraska, but not common. This species is black with extensive yellow or greenish markings. It has a large abdominal club. All the abdominal segments are marked with yellow on top. Segment 9 has the widest yellow spot: a large square or oval on the top. It is often found resting on rocks along streams. The female is similar to the male.
Photo courtesy of Loren and Babs Padelford.
Green indicates accepted county record (specimen or photograph).
Size: 52-59 mm (2.0-2.3 in)
Habitat: rivers with moderate current and muddy bottoms
Great Plains Range: TX, OK, KS, NE, SD, ND, NM, CO, WY, MT, MO, IA, MN
Flight season: late May to late July
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