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Tweed, Ontario, near a sand-bottomed woodland stream east of town along trans-Canada Trail:
small sand bottomed creek as well as some standing or slowly moving water in shady forested areas.
Sunlit open spaces are created by the trail. The lagoon is located not far to the north.
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Male Cordulegaster naiad –
all the naiads depicted below are probably Arrowhead Spiketails (Cordulegaster obliqua),
several adults have been observed flying at this habitat
(August 09, 2013).
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Female Cordulegaster naiad –
this one is about 40 mm long.
Note the ovipositor in the ventral view
(August 10, 2013).
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Cordulegaster naiad –
aspects of the labium
(August 10, 2013).
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Cordulegaster naiads –
active in the winter, dozens have been found in the sandy substrate of the stream
(January 13, 2014).
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East of Tweed, Ontario, near intersection of Sulphide Road and the trans-Canada Trail:
sand-bottomed woodland stream.
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Female Cordulegaster naiad –
a master of camouflage.
The naiads depicted below are large, about 40 mm in length.
As yet, no adults have been observed flying at this habitat
(May 06, 2014).
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Female Cordulegaster naiad –
two finds on this day, a male was also discovered lurking in a sand-bottomed pool further upstream
(August 30, 2014).
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