Hell’s moth caterpillar spreads beyond Funen to Jutland and Copenhagen

The oak processionary moth caterpillar, known in Denmark as “larven fra helvede” (the caterpillar from hell), has now been detected in Jutland and Copenhagen after weeks of outbreaks on Funen, reports DR.

Copenhagen Municipality confirmed the caterpillar was found in three oak trees on the edge of Amager Fælled. The discovery came during preventive inspections, and removal is underway, according to a press release.

“We had hoped it would take longer before the oak processionary moth reached Copenhagen. Now it’s here, and we are prepared and starting to combat it where it’s found,” said Mette Baungaard, section chief for the city’s Climate, Environment, and Technical Administration.

In Morsø Municipality, western Jutland, the caterpillar was found in a single newly purchased oak tree, which was immediately burned and disposed of, communications chief Rasmus Andreassen told TV Midtvest. The tree had originated from a Funen nursery.

Nyborg Municipality also reported infestations in three oak trees in Aunslev, Ullerslev, and Nordenhuse, which were eradicated the same evening using boiling water and foam.

Odense remains the hardest-hit area. Authorities have concluded that full eradication is impossible, shifting focus to limiting spread and reducing risks to residents and animals.

The caterpillar’s hairs, which can carry on the wind farther than initially thought, cause skin rashes, eye irritation, and respiratory issues. Direct contact may also trigger itching, swelling, and pain.

Odense Municipality has advised against walking or cycling on selected pavements and bike paths due to the risk of airborne hairs.