Montalegre fighting Asian wasp invasion Montalegre, in the north of the country has recorded a 97% reduction in Asian wasp nests identified as a result of the implementation of a network of traps throughout the county, a measure that has been repeated since 2019 "The presence of the wasp velutina has decreased considerably throughout the territory of the municipality of Montalegre, confirmed with reduced or zero predation on apiaries. With this, not only are the beekeepers are quite happy but the entire ecosystem of Alto Barroso is richer," said José Luís Tavares, coordinator of the municipal plan to combat that invasive species.