Public warned following discovery of invasive moth species in Ireland

A WARNING has been issued to the public after the discovery of an invasive pest species of moth in Dublin.

The Department of Agriculture, Food and the Marine has confirmed the finding of Thaumetopoea processionea, commonly known as the Oak Processionary Moth.

Oak Processionary caterpillar nests were recently discovered on four oak trees in a Dublin housing estate, which were subsequently destroyed. 

Ireland has a Protected Zone status under the EU Plant Health legislation for this pest. A Protected Zone is an area of the EU which is free from a harmful organism.

Oak Processionary moth caterpillars mainly feed on the foliage of oak trees, however they are known to feed on other tree species, such as acacia, birch, hornbeam, hawthorn, hazel and beech when oak is not available.

Their feeding can cause severe defoliation, leaving trees weakened and open to secondary infections from other pests and diseases.

An intensive survey has commenced around the affected area and will continue over the coming months.

The pest also poses risks to human and animal health, as the body of the caterpillar is adorned with numerous irritating hairs. These can provoke allergic reactions which manifest as skin rashes, conjunctivitis and respiratory problems such as pharyngitis and asthma. 

Members of the public are been advised not to touch or approach nests or caterpillars, and to keep children and animals away from them. 

A warning has also been issued that people should seek medical advice if you think you or someone you care for has been seriously affected, and a vet should be contacted if you think your pet or livestock has been seriously affected.

According to the Department, suspected sightings should be treated with extreme caution and they must be notified immediately, along with contact details and geolocation of the sighting.

This can be done by emailing plantandpests@agriculture.gov.ie or by telephone to 01-5058885.