The male is jokingly
described as being like a snooker player: beer glass in s2,
cue (a spur) on the side of the thorax and a bow-tie in s9!
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The female blue-form can be confused with
the female blue-form of the variable damselfly.
It has a thistle shape in s2, no bar between the eye-spots
and less than a third of s4 & s5 shows blue (more than a third
in variable damselfly). For more detail, refer to variable damselfly.
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The female green-form is more common (in the UK)
than the blue-form. Segments are dark.
Thoracic stripes are unbroken in both sexes.
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