Invasive Wasps in Mallorca: Who Will Stop the Buzz?

Invasive wasps in Mallorca: Who will stop the buzzing?

Key question: Are current measures and public participation enough to prevent a new plague?

In recent weeks, teams from the monitoring campaign have found and removed several nests of invasive wasps. On Mallorca this year, five nests of the Asian hornet (Vespa velutina) have been discovered so far; in addition there are two nests of the Oriental hornet (Vespa orientalis). Across the Balearic Islands the statistics also hum: eight nests removed, plus one find on Ibiza. The operations fall into a phase when colonies reach their summer activity peak.

That sounds clinical. At the Plaça Cort in Palma, however, on a windless morning you hear more than pedestrians: repeatedly a sharp, high buzzing that seems to come from a transformer box next to the market. Gardeners on the Avenida Gabriel Roca report they have seen unusually large wasps on bougainvillea and in garbage containers. Such everyday scenes prompted authorities to ask the public for help — via WhatsApp at 606 875 244 or through the reporting page www.lineaverdecofib.es. Local authorities have previously reported other invasive detections, including Singapore ant detected in Palma for the first time: More than a kitchen nuisance.

Brief analysis: Authorities rely on two tactics during the season. In spring many traps were set (381 between March and May) and founding queens were caught; in midsummer teams search specifically for secondary nests. That is technically sound: catching a young queen early prevents a colony of thousands of workers. But the crux goes deeper.

What is missing from the public discourse? First: a transparent map of find locations at the municipal level so neighbours and beekeepers can be especially vigilant on specific streets. Second: clearer guidance for laypeople on what a nest looks like and how to behave — not just phone numbers but practical steps that reduce the risk to people and to removal teams. Third: long-term support for beekeepers whose colonies are threatened by predation losses; currently the problem is treated as a short-term action rather than a permanent risk.

A simple comparison: the Asian hornet was first found on the island in 2015; between 2015 and 2018 it spread rapidly, prompting intensive measures. There were then years without finds until 2021, when a nest was detected in Marratxí. In 2024 and 2025, 21 nests were removed each year. The numbers show patterns of return and outbreaks — not a one-off event.

What can be done practically now? Concrete proposals for three groups:

For residents: Do not attempt to remove nests yourself; report any found nest immediately; take photos from a safe distance; secure trash bins and ripe fruit, since food sources attract worker wasps.

For beekeepers and farmers: form connected observation groups, forward consolidated reports to the municipal administration; check protective measures on hives; organise emergency plans for pollination.

For authorities and municipalities: publish anonymised find locations on a map; offer targeted information stalls at weekly markets (Mercat de l'Olivar, Sineu); tighten waste disposal rules to avoid exposed food residues; consider financial compensation for affected beekeeping operations.

Another lever: continuity of trap and nest monitoring. The captures of 22 Asian hornets in spring traps show that monitoring works, but follow-up and the capacity to locate secondary nests must be maintained. Teams should work with local knowledge — who knows the slopes in Banyalbufar better than the gardeners, who knows the old barns in Felanitx better than the neighbours?

What is often overlooked: culture also plays a role. In villages like Campanet there is strong respect for house and garden structures; there, local volunteer groups can help raise awareness without causing panic. Sensitive communication prevents someone from violently removing a nest and endangering themselves and others — as cases have shown where unilateral action led to accidents.

In short: control requires precision, persistence and a network of professionals and vigilant neighbours. Even better would be a clear division of responsibility between the municipality, the island government and agricultural associations — otherwise the problem will keep shifting from one year to the next.

Conclusion: the current finds are warning signs, not fate. If someone sees an unusually large wasp in the water on a hot afternoon at Cala Major, they should not try to swat it with a towel but report the sighting. The more structured reports and the better the coordination, the greater the chance that the buzzing will not become a permanent condition.