All photos are copyright Jesper Johnsen Pedersen

Coenagrion armatum

Hue-Vandnymfe

July 15, 2012
  • Suborder:
    Zygoptera
  • Family:
    Coenagrionidae
  • Genus:
    Coenagrion
About

A dark, inconspicuous damselfly that lives concealed on marshy vegetation. At first glance, more reminiscent of an Ischnura than a Coenagrion. Both sexes can be identified by the black abdomen marked diagnostically with blue at the base and the tip, and are easily recognised by their different but equally distinctive markings. The male is armed (hence its name) with peculiar lower appendages, so large that they stand out even when seen with the naked eye.

Size

Total: 31-34 mm.
Abdomen: 22-26 mm.
Hindwing: 16-21 mm.

Habitat

Fields of sedges (Carex), Water Horsetail (Equisetum fluviatile) or similarly reedy plants, usually standing in shallow, mesothrophic water. Here, the vegetation is quite uniform, with a critical plant density (not too open, but also not too dense), offering adults both shelter and room to move.

Flight Season

From May to August.

Range and Status

Rare in Denmark.



 

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