Erythromma najas
• English name: Large Redeye
• German name: Grosses Granatauge
• French name: Naïade aux yeux rouges
• Dutch name: Grote roodoogjuffer
• Swedish name: Större rödögonflickslända
• Norwegian name: Rødøyevannymfe
• Finnish name: Isotytönkorento
• Danish name: Rødøjet vandnymfe
• Italian name: Occhirossi maggiore
• Czech name: šidélko rudoočko
• Slovenian name: Veliki rdečeokec
• Bulgarian name: Голямо стреличе
Erythromma najas
Not present
Present before 1990
Present after 1990
Present before and after 1990
Present after 2015

Map data based on J.-P. Boudot & V. J. Kalkman (eds.),
Atlas of the European Dragonflies and Damselflies
| General | • a fairly large species with red eyes which occurs mainly in central and northern Europe | |
| Classification | • suborder: Zygoptera (damselflies); family: Coenagrionidae | |
| Conservation status | • IUCN Red List Europe: Least Concern | |
| Scientific name | • Erythromma najas (Hansemann, 1823) | |
| Name genus | • Erythromma: from Grk. ἐρυθρός = red +; ὄμμα = eye | |
| Name species | • najas: after Ναιάς = Naiad, a freshwater nymph in Greek mythology | |
| Distribution | • click or tap the Map button above | |
| Habitat | • well-vegetated ponds and lakes, especially with floating vegetation | |
| Dimensions | • typical body length: 30-36 mm; hindwing: 19-24 mm | |
| Notes | • noticeably larger than E. viridulum | |
| Male | Head | • the eyes are bright red |
| Thorax | • the antehumeral stripe is absent | |
| Abdomen | • the top of the abdomen is all black except for S1, S9 and S10, which are sky blue | |
| ➤ the sky-blue tail-light on S9 and S10 is uninterrupted | ||
| ➤ the side of S2 and S8 are black | ||
| • S1-S7 may be covered by a light pruinescence | ||
| Female | Head | • the eyes are brown/green |
| Thorax | ➤ the antehumeral stripe is heavily reduced | |
| Photographs | • most of our photos below were made in Austria, Finland and the Netherlands |

