Old World Bluets - Coenagrion
 Often referred to as "Old World Bluets" this genus
is small to medium in size and is found in the northern portions of the
US and Canada. They seem to be able to tolerate cooler temperatures
more than any other genus of damselflies. Males are marked primarily in
black and blue, and have divided pale shoulder stripes. Coenagrions are
often misidentified as American Bluets (Enallagma). Some say that they
are closely related. Their appearance is
so similar in the field that most have to be identified by their
abdominal appendages under magnification.
Females of this group are either similar to males, take on
male-like hues, or of a duller coloration (greens or brownish hues) depending
upon the specie. Females lake a vulvar spine on their abdominal segment 8.
This generally distinguishes them in the field from American Bluets who presents
with a vulvar spine.
Some species of Coenagrion are habitat specific preferring
boreal fens and bogs with sphagum and shrubs, while others sedge marshes, lakes
and ponds with dense vegetation.
This genus is difficult to find due to their habitat preference.
They rarely fly over open waters, making them less visible then the American
Bluets. And when they do, it is to seek a female for mating.
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