Danish species per municipalities.

       
Small Redeye (Erythromma viridulum)
Denmark
Status: First seen in Denmark in 2001 and has been spreading northward constantly since then. Same movement has populated southern Sweden. Has entered from southeast being most common on Sjælland, Lolland and Falster with a northwest movement through Fyn and Jylland. Likely in competition with najas and is probably more adaptable to the Danish conditions. As of 2025 the observations in the northern part of the country (Jylland) are still scarce with only few records per municipality (however, perhaps emphasized by less coverage).

Syddanmark
Aabenraa
Assens
Esbjerg
Faaborg-Midtfyn
Fredericia
Haderslev
Kerteminde
Kolding
Langeland
Middelfart
Nordfyns
Nyborg
Odense
Svendborg
Sønderborg
Tønder
Varde
Vejen
Vejle
Ærø
Nordjylland
Aalborg
Frederikshavn
Hjørring
Jammerbugt
Læsø
Thisted
Midtjylland
Aarhus
Favrskov
Hedensted
Herning
Holstebro
Horsens
Ikast-Brande
Norddjurs
Odder
Randers
Rebild
Ringkøbing-Skjern
Samsø
Silkeborg
Skanderborg
Skive
Syddjurs
Vesthimmerland
Østdanmark
Albertslund
Allerød
Ballerup
Billund
Bornholm
Brøndby
Dragør
Egedal
Faxe
Fredensborg
Frederiksberg
Frederikssund
Furesø
Gentofte
Gladsaxe
Glostrup
Greve
Gribskov
Guldborgsund
Halsnæs
Helsingør
Herlev
Hillerød
Holbæk
Hvidovre
Høje-Taastrup
Hørsholm
Ishøj
Kalundborg
København
Køge
Lejre
Lolland
Lyngby-Taarbæk
Næstved
Odsherred
Ringsted
Roskilde
Rudersdal
Rødovre
Slagelse
Solrød
Sorø
Stevns
Tårnby
Vallensbæk
Vordingborg