“Invasion of flies in Liège”, “I have never seen it in my life”, “there was everywhere”: an expert explains why the ardent city was taken by storm … by insects

There are many of you have contacted us via the orange button alert us this Wednesday evening to report a situation … Consequently, Rather special: “an invasion of flies” in Liège and in the surroundings. For example, According to an expert, this is actually ants. Nevertheless, The latter reassures and says it is “completely normal”. Moreover, Explanations. Similarly,

“There are everywhere in Liège. Therefore, Slys stick to clothes, enter the cans … Meanwhile, A real invasion. Therefore, We received a multitude of messages from this ilk this Wednesday in the evening. Similarly. Meanwhile, The next morning, Evelyne tells us about her experience: “invasion flies liège”, “i have new “I went out for my dog and there were flies everywhere. For example, »»

“invasion flies liège”, “i have

She continues: “There was a real cloud in the air. It was quite embarrassing. we were filled with insects, I had to shake my clothes to get home and we shortened the ride. There were thousands of them, maybe more, I don’t know. The most surprising: this Thursday morning, there was “nothing”. “I learned later that it was ants. that it sometimes happened but I had never seen it in my life,” adds our interlocutor.

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“It’s the period” – "invasion flies liège", "i have – "invasion flies liège", "i have new

To better understand the phenomenon, we addressed François Verheggen. He is a zoology professor at “invasion flies liège”, “i have new the University of Liège. He confirms the information of Evelyne. it is a question of ants and he reassures immediately: “it “invasion flies liège”, “i have is completely normal”.

“Ants are in full swarming,” he says. A little context: they constituted colonies all spring. summer in the soil, the queens who founded these colonies have been laid. Each colony sometimes reaches thousands of individuals.

“And at this time of year. among the young people who have emerged, there are males and females who wear wings. It is the individuals who will carry out the swarming. who will leave the “invasion flies liège”, “i have new colony to mate. if possible, with other individuals from the neighboring colonies and thus give fertilized females that will land, lose their wings and settle in the future places “invasion flies liège”, “i have of the colonies that they will manufacture the following year, ”adds the expert.

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What happened yesterday in Liège is therefore not exceptional “and it is often the weather that is the trigger”, he specifies. As for the duration of the phenomenon, François Verheggen affirms that “this is also normal”.

“The swarm, the flight during which reproduction is not last long lasts. It lasts a handful of an hour. Everything took place. That does not mean that we will no longer see other ants flying since there are also other species. that will make their swarms. ”explains the specialist. If this is reproduced with other species, “invasion flies liège”, “i have new they will undoubtedly be fewer he concludes. In Liège this Wednesday it was probably Lasius Niger. a small black ants of the gardens, very common with us.