Flight season: late May to late August.
Population: less frequently encountered than the Ebony Jewelwing (Calopteryx maculata).
This damselfly may also found at the Vanderwater Conservation Area.
Length: about 55 mm. In the field females are easily distinguished from males by their white pseudo-pterostigmata.
The female River Jewelwing is separated from the female
Ebony Jewelwing
by its relatively narrow wings and white labrum.
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Tweed, Ontario, the 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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Male River Jewelwing (Calopteryx aequabilis)
May 26, 2010
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East of Tweed, Ontario, along the trans-Canada Trail:
deciduous woodland with clearings created by the trans-Canada Trail,
Stoco Lake nearby to the south.
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Male River Jewelwing (Calopteryx aequabilis)
June 04, 2015
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East of Tweed, Ontario, near intersection of Sulphide Road and the trans-Canada Trail:
vegetated border of the trail near a sand-bottomed woodland stream, Stoco Lake is not far to the south.
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Female River Jewelwing (Calopteryx aequabilis)
June 07, 2015
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East of Tweed, Ontario, a patch of wildflowers along Lakeview Lane:
a clearing in the woodland supporting tall grasses, wildflowers, Hawthorn, Tatarian Honeysuckle and Prickly Ash.
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Female River Jewelwing (Calopteryx aequabilis) –
in some females the wings are completely dark rather than banded.
The proportions of the wings – 3½ to 4 times as long as wide –
indicate this is indeed a River Jewelwing
(May 25, 2015).
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