Danish species per municipalities.

       
Northern Emerald (Somatochlora arctica)
Denmark
Status: In Denmark very local and threatened by habitat loss. Isolation from Swedish or German populations makes it less likely that the population can be boosted from outside.

Aalborg:
4 records Lille Vildmose 2003+13+18+21 (https://www.naturbasen.dk/observation?id=849802)
Horsens:
Stronghold Addit Hede 2005-24 (https://www.naturbasen.dk/observation?id=1592122), not seen Endelave
Ikast-Brande:
Several records Nørlund Plantage 2010-24 (https://www.naturbasen.dk/observation?id=1097870), 2 undocumented records Gludsted Plantage 2012+18 (https://www.naturbasen.dk/observation?id=852187), Several records Letmose 2011-22 (https://www.naturbasen.dk/observation?id=1999573), 1 record Bølling Sø 2025 (https://www.naturbasen.dk/observation?id=5215297)
Mariagerfjord:
1 record Lille Vildmose 2018 (https://www.inaturalist.org/observations/107030399#data_quality_assessment)
Rebild:
Several records Rold Skov 2018-23 (https://www.naturbasen.dk/observation?id=4223594)
Silkeborg:
Population Kompedal Plantage 2018+22+25 (https://www.naturbasen.dk/observation?id=5194428), few records Salteneng w/Salten Langsø 2013-22 (https://www.naturbasen.dk/observation?id=5194428), 3 undocumented records Langkær 2011-12 (https://www.naturbasen.dk/observation?id=688316), few records Sebstrup Sande 2008-10 (https://www.naturbasen.dk/observation?id=246904)
Nordjylland
Aalborg
Midtjylland
Horsens
Ikast-Brande
Mariagerfjord
Rebild
Silkeborg