Danish species per municipalities.

       
Baltic Hawker (Aeshna serrata)
Denmark
Status: First time registered in Denmark was in 2006 in Vejlerne, Nordjylland, and ever since it has been restricted to this part of the country. The first ten years numbers up to 40-50 could be registered, but since then it seems like the population has been shrinking, and in recent years it has been complete absent or just a single or few individuals found in a season. In 2023 1 was found, in 2024 0, but a small handful was present again in 2025, giving hope that the species will manage to survive.

It is a mystery why it hasn't been able to spread to other parts with similar conditions, as there appear to be many suited sites spread out in the region and the country.
Nordjylland
Jammerbugt
Thisted