Vespa Orientalis, the expert: “No alarm, risk will end in October”

“At a certain point the nests perish, the colony dissolves”

“There is no Vespa orientalis alarm” and, in any case, “the risk that can be linked to the presence of hornets (alien and otherwise) will end with the month of October. Because at a certain point the nests perish, the colony it dissolves and until the following year when the reproductive cycle and then the construction of the nest will start again these problems will no longer exist “. So Andrea Monaco, Ispra zoologist, takes stock with the Adnkronos on the presence of the insect in Italy.

Three species of hornets in our area: Eastern hornet (Vespa orientalis) (“an autochthonous Italian insect that didn’t come from outside”), European hornet (Vespa crabro) and Asian hornet (Vespa velutina), the only alien species ” arrived in Italy in 2012 “.

The spread of Vespa orientalis has been to the attention of the media in recent weeks. “In reality there is no alarm, it is more journalistic and has created havoc in people – he explains – There is a noteworthy fact: in recent years we have realized that this species, which until a few years ago had a distribution area that reached the maximum up to southern Campania, is expanding its area of ​​presence to the north also due to the warming of the climate. This could be one of the further impacts of climate change “.

“We have had reports in Florence, La Spezia, Genoa and a population has settled and nested in Trieste. What we are witnessing this summer is the arrival of the Vespa orientalis in a more evident way than in previous years in Rome, where also for the effect of the amplification of the media has resulted in a case. The recurrence with which in recent years we have been seeing it outside its traditional area of ​​presence makes us think that it is expanding its area to the north “, reiterates the expert.

But what are the risks for humans? “The Vespa orientalis has the same danger as the European hornet with which we have always lived. It is not an aggressive species but it can attack when it feels threatened, in particular when it perceives a threat near the nest. if you have identified a nest near your home, for example, do not intervene on your own because that is a situation with a high risk of multiple bites. if we get excited and try to chase it away then there is a risk of an insect reaction, “he explains.

As for any checks in the schools, on the occasion of the openings, “ok take a look at these buildings that have been closed for weeks but in any case all this will end at the end of October”.