Northern Damselfly

Coenagrion hastulatum

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Description

Adult

Length: 31mm

This species is found in only a few small lochans in Scotland. In the male, S2 has a rather variable, spear-head shaped spot linked rather like the cards ♠ "Spades" symbol. S8 and S9 are blue except for 2 small black spots on S9.
The female is clear green from the side but mostly black from above.

Flight Period: June (May) - July (August)

Larvae

Length: 14-15mm

Antennae with 6 segments and prominant spotting on the head. Caudal lamellae long and narrow with distinct, dark nodal constriction and dark nodal line.

Habitat

This species is restricted in the UK to sedge-fringed lochans in the Scottish Highlands.

Status & Distribution

Rare and local. This is a Red Data Book species.

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Similar species

This species is easily confused with the other members of the genus Coenagrion and with the Common Blue Damselfly Enallagma cyathigerum . Look at S2 (on the males) for distinguishing characters. Northern Damselfly is a weak flyer and has a very restricted range. The females can be particularly tricky to distinguish apart.