Asian hornet's ID Card (Vespa velutina)

The Asian hornet , scientifically known as Vespa velutina , is a hymenopteran insect belonging to the Vespidae family. Several subspecies exist worldwide. The Asian hornet originates from the temperate and subtropical forests of Asia.

The different subspecies of Asian hornets

Adrien Perrard, Mariangela Arca, Quentin Rome, Franck Muller, Jiangli Tan, Sanjaya Bista, Hari Nugroho, Raymond Baudoin, Michel Baylac, Jean-François Silvain, James M. Carpenter, Claire Villemant , CC BY 2.5 , via Wikimedia Commons

There are many subspecies of the Asian hornet Vespa velutina that share different distribution areas. They all originate from Asia, where areas with tropical or continental climates have favored its expansion.

In France and Europe, the black subspecies , Vespa velutina nigrithorax, is present. The climate of continental Asia, the region of origin of nigrithorax , is comparable to that of France. This explains the ease with which the Asian hornet colonizes these new territories.

  • Vespa velutina ardens
  • Vespa velutina auraria
  • Vespa velutina celebensis
  • Vespa velutina divergens
  • Vespa velutina flavitarsus
  • Vespa velutina floresiana
  • Vespa velutina karnyi
  • Vespa velutina mediozonalis
  • Vespa velutina nigrithorax
  • Vespa velutina sumbana
  • Vespa velutina timorensis
  • Vespa velutina variana

Arrival of the Asian hornet in Europe

Native to the temperate and subtropical forests of East Asia, the Asian hornet was accidentally introduced to Europe in the early 2000s.

The first official report dates back to 2004 , in the Loire-Atlantique region of France. Experts believe the insect was transported via wood, bamboo, or packages containing hidden nests. Since this initial establishment, the insect has spread rapidly across France , Belgium, the Netherlands, Luxembourg, Germany, Italy, Spain, Portugal, the United Kingdom, and several Eastern European countries.

Its expansion is favored by a mild climate, the abundant presence of domestic bees and the availability of numerous nesting sites.

How to recognize the Asian hornet Vespa velutina Nigrithorax ?

Vespa velutina Nigrithorax
Toulouse museum , CC BY-SA 3.0 , via Wikimedia Commons

The Asian hornet nigrithorax is distinguished by several easily identifiable visual characteristics .

The body is glossy black with a slightly velvety appearance. The abdomen has an orange-red band across the upper third, often interrupted in the center, which clearly distinguishes it from the European hornet ( Vespa crabro ), which has a more robust body and is predominantly black and yellow. The wings are transparent, slightly tinged with brown at the edges.

The female typically measures between 25 and 30 mm in length, while the male is slightly smaller, around 20 to 25 mm. In the female, the stinger is fully functional, whereas the male possesses a vestigial stinger, incapable of piercing.
These differences in size, color and structure of the stinger make it possible to quickly distinguish the sex and species during a field observation.

Frequently Asked Questions

What is the lifespan of an Asian hornet?

The lifespan of an Asian hornet depends on its role in the colony.
The workers live on average from 3 to 8 weeks and the males live for a few weeks, the time it takes to reproduce.
Queens can live for almost a year, as they survive the winter by hibernating.

What are the feeding behaviors of the Asian hornet?

The Asian hornet is an opportunistic predator. The workers primarily hunt flying insects, especially honeybees, which explains the significant impact on beehives. They also consume arthropods, flies, caterpillars, and ants. The adults also feed on sugary liquids such as nectar and ripe fruit.

Is the Asian hornet dangerous to humans?

The Asian hornet is not naturally aggressive towards humans. It primarily attacks to defend its nest when disturbed or threatened. In these situations, it can inflict multiple and potentially painful stings, especially if a person gets too close to a nest. In people allergic to hymenoptera stings, the reaction can be more severe, requiring prompt medical attention.

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