Coenagrion mercuriale (Southern Damselfly)
The smallest blue damselfly in the UK and one of the rarest. We spotted our UK specimens in the New Forest but it has outposts in Devon and the Gower peninsula. We’ve also seen them near Le Loir and at the Peau de Meau, both in France.
- black Coenagrion “spur” on side of thorax
- ♂ – S2 displays a black shape supposedly resembling Mercury’s winged helmet
- ♂ – S3-6 usually ~half black dorsally
- lozenge-shaped pterostigma with darker centre. [Sounds like a chocolate :D]