These are the two Erythromma species that have red eyes and occur in the UK. Here’s a comparison chart to help sort them out:
- Erythromma najas (Large Redeye/Red-eyed Damselfly)
- Erythromma viridulum (Small Redeye/Small Red-eyed Damselfly)
[DO see my Myth Buster on Redeyes to avoid falling into the “dash-dot” trap.]
