The oak processionary moth has been found in several locations on Funen and in Odense.
The caterpillar, often referred to as "the caterpillar from hell," can cause skin rashes, eye irritation, and respiratory issues in both humans and animals with its tiny urticating hairs. 

At the University of Southern Denmark, we are closely monitoring the situation and have initiated control measures on trees located near busy paths, roads, and other areas with high foot traffic.

The aim is to reduce the risk of contact with the caterpillars and their urticating hairs. 

SDU follows the guidelines and recommendations set forth by Odense Municipality for managing the oak processionary moth.

Update on oak processionary moths at SDU

SDU is continuing its work to manage oak processionary moths on the university’s premises.

With the start of semester just around the corner, we would like to provide an update on the situation and the precautions that have been taken to ensure a safe campus environment.

The oak processionary moth is a moth whose caterpillars may be covered in tiny stinging hairs. These hairs can cause skin irritation, itching, rashes and irritation of the eyes and airways in humans. Although the caterpillars are now in the process of pupating or have turned into moths, stinging hairs may still be found in old nests and in the area around infested oak trees.

The campus can be used as normal

Teaching, freshers’ activities and other events will go ahead as planned. There is no general recommendation to avoid using outdoor areas.

However, we urge everyone not to linger under oak trees and to respect any signage. If an area is cordoned off, it is because the presence of larvae or nests has been confirmed or is suspected.

SDU is stepping up its efforts

To be able to respond quickly to new findings, SDU has invested in its own pest control equipment. This means that the university is not dependent on the capacity of external suppliers, but can initiate control measures as soon as new caterpillar nests are discovered. This also applies in the spring, when any new eggs and caterpillars can be dealt with quickly and effectively.

The investment also strengthens SDU’s work on sustainable operations. The equipment uses hot water rather than chemicals and, in addition to controlling oak processionary moths, can also be used for weed control. In this way, SDU gains a solution that is effective, flexible and environmentally friendly.

Have you spotted a nest or caterpillars on campus?

Please contact Technical Services at 8888@sdu.dk with details of the location so that we can investigate the matter promptly.

How to Recognize the Oak Processionary Moth

The caterpillars primarily inhabit oak trees, where they create characteristic nests of silk on the trunk and larger branches. They are particularly active during the spring and summer months. 

Be Cautious

If you see caterpillars or nests:

• Keep a safe distance from the tree and avoid touching the caterpillars, nests, or fallen remnants.
• Do not attempt to remove the caterpillars or nests yourself.
• Respect any barriers or signage in the area. 

If You Experience Symptoms

Contact with the caterpillars' urticating hairs can cause itching, skin rashes, and irritation of the eyes and respiratory system. In cases of severe symptoms or breathing difficulties, you should seek medical attention. 

SDU will continue to monitor the university's grounds and implement control measures where there is deemed to be a risk to students, staff, and visitors.

Read Odense Municipality's recommendations here