A determined campaign to protect public health
The city of Madrid has concluded an intense campaign to control the processionary caterpillar, an insect that poses a risk to both humans and pets. During the months of January and February, more than 53,500 nests have been removed from trees, reflecting a significant effort by the City Council to mitigate the impact of these poisonous insects.
The delegate for Urbanism, Environment and Mobility, Borja Carabante, has pointed out that this figure is lower than the 70,000 nests eliminated the previous year. This decrease is attributed to the harsher and wetter climatic conditions during the current winter, which have affected the development and proliferation of the caterpillars.
The comprehensive programme against the processionary caterpillar is carried out in four phases throughout the year. The first phase begins in summer with the placement of pheromone traps, designed to catch males and prevent their reproduction. This year, nearly 5,000 traps have been installed across the city.
From October to November, a technique known as endotherapy is implemented in selected trees that are difficult to reach manually. This treatment involves introducing phytosanitary products into the tree's sap, ensuring they reach the leaves where the caterpillars feed.
During January and February, mechanical removal of nests in pines and cedars is carried out, while as an additional preventive measure, rings are installed around the trunks of trees to prevent the caterpillars from descending to the ground. In this latest campaign, more than 5,300 rings have been placed.
The parks most affected by this plague include areas with a high concentration of pines and cedars such as Casa de Campo and Dehesa de la Villa, where the City Council has intensified its efforts.
Despite partial success in controlling these caterpillars, the City Council warns about the dangers associated with their presence. The stinging hairs can cause adverse reactions in sensitive skin, especially among young children attracted by their characteristic movement in a line.
Authorities recommend educating children about these risks by showing images and informing them how to avoid approaching these creatures or their nests. Additionally, any sightings should be reported to the municipal service by calling the toll-free number 010.
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