Flight season: late May to late July.
Population: uncommon and not encountered every year.
Sightings to date have occurred along or near the Moira River.
Length: about 45 mm to 50 mm.
Its size and distinctive facial markings serve to separate this species from other clubtails.
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Tweed, Ontario, east of town along trans-Canada Trail:
woodland with clearings both natural and created by the trail, about ¼ km east of the Moira River.
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Two immature male Mustached Clubtails (Gomphus adelphus) –
there was a bumper crop of these small dragonflies this year
(May 25, 2011)
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Front view of an immature male Mustached Clubtail (Gomphus adelphus)
depicting the distinctive facial cross-stripes and "mustach".
(May 25, 2011).
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Aspects of a female Mustached Clubtail (Gomphus adelphus) –
as with many other clubtails the immatures are an eye-catching black and yellow,
the yellow markings turning dull green and finally a bluish-grey with age
(May 24, 2011).
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Tweed, Ontario, Moira River near the walking bridge and dam:
rock-bottomed river with fast flowing water, rapids and emergent rocks, but also quiet pools and backwaters. The shoreline vegetation is mostly trees with a few small clearings supporting tall grasses and wildflowers.
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Female Mustached Clubtail (Gomphus adelphus) –
an image of the subgenital plate. This indivdual was a teneral and therefore handled with great care
(May 21, 2016).
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Lateral view and facial markings of a mature female Mustached Clubtail
(June 10, 2016).
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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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Mature male Mustached Clubtail (Gomphus adelphus)
June 16, 2011
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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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Male Mustached Clubtail (Gomphus adelphus) –
roadkill, but the claspers and secondary genitalia were worth photodocumenting
(June 15, 2014).
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