Flight season: late May to mid-August.
Population: very common and widespread. Prefers marshy lakes, slow streams and rivers with mud bottoms,
often found foraging a good distance from water.
Length: about 40 mm to 45 mm.
As a rule the Lancet Clubtail usually has a generous amount of yellow on S8 to S10, particularly on S9,
but this can vary and may be greatly reduced in some individuals.
Best separated from the Dusky and Ashy Clubtails
by the cerci and secondary genitalia (males) or subgenital plate (females).
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Vanderwater Conservation Area:
Moira River, rock-bottomed with fast flowing water, rapids and emergent rocks, but also quiet pools and backwaters.
The shoreline vegetation consists of wooded areas and clearings supporting tall grasses and wildflowers.
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Study of a male Lancet Clubtail (Gomphus exilis) – the amount of yellow from S8 to S10 is drastically reduced on this individual.
Nonetheless the cerci and secondary genitalia identify the dragonfly as a Lancet Clubtail
(June 15, 2014).
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Tweed, Ontario, the Moira River, east of town near Collin's Point:
rock-bottomed river with fast flowing water, rapids and emergent rocks,
the shoreline vegetation consists of wooded areas and clearings supporting tall grasses and wildflowers.
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Male Lancet Clubtail (Gomphus exilis)
June 10, 2011
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Images of another male Lancet Clubtail (Gomphus exilis), its claspers and the secondary genitalia
(June 06, 2014).
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A female Lancet Clubtail (Gomphus exilis) and a closeup of its subgenital plate
(June 10, 2011).
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Northeast of Tweed on Highway 7, near Studio 737:
sunlit forest clearing with shrubs, tall grasses and wildflowers.
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Female Lancet Clubtail (Gomphus exilis) – clubtails like to perch horizontally
on leaves, rocks, the ground or whatever other object might be handy
(June 19, 2011).
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Tweed, Ontario, east of town along the trans-Canada Trail:
woodland with clearings created by the trail, Stoco Lake is nearby to the south.
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Teneral female Lancet Clubtail (Gomphus exilis)
June 06, 2011
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