
The Vespa species of wasps is a fascinating group, and understanding their biology can help you identify them with confidence. They are eusocial insects, meaning they live in colonies with a single queen and a strict caste system.
Vespa wasps are typically yellow and black in color, with a slender body and long, narrow wings. Their nests are often found in protected areas like eaves, attics, or underground burrows.
The queen Vespa is responsible for laying eggs and expanding the colony, while the workers focus on foraging, caring for young, and defending the nest. This division of labor allows the colony to thrive and grow.
Vespa wasps are generally non-aggressive and only sting in self-defense, but their venom is potent and can cause painful reactions in some people.
Taxonomy and Classification
The yellow-legged hornet, also known as the Asian hornet or Asian predatory wasp, is classified under the order Hymenoptera.
This wasp belongs to the family Vespidae and the subfamily Vespinae. The genus name is Vespa, which was first described by Linnaeus in 1758.
Taxonomy

Taxonomy is a way to categorize living things into groups based on their characteristics and relationships.
The yellow-legged hornet, for example, is classified under the order Hymenoptera.
Hymenoptera is a large and diverse group that includes wasps, bees, and ants.
The yellow-legged hornet specifically belongs to the family Vespidae.
Vespidae is a family of wasps that includes paper wasps and yellowjackets.
The yellow-legged hornet is further divided into the subfamily Vespinae.
Vespinae is a subfamily of wasps that includes hornets and yellowjackets.
The yellow-legged hornet is classified under the genus Vespa, which is a genus of hornets.
Vespa is a genus of hornets that includes several species of hornets.
The yellow-legged hornet is specifically classified under the species Vespa velutina.
Vespa velutina is a species of hornet that is native to Asia.
The yellow-legged hornet is also known by other common names, including Asian hornet and Asian predatory wasp.
Diagnostic Characteristics
Diagnostic Characteristics are a crucial aspect of identifying any species, and in the case of the subject of our article, they are quite distinctive.
On average, queens and males reach a length of 30 mm (1 in.), while workers are slightly smaller at 20 mm (0.7 in.).
The body of the subject is predominantly dark brown to black, with the face and mouthparts standing out in a vibrant orange. A dark clypeus is the only exception to this coloration.
The antennae have a brown dorsal side and an orange ventral side, adding to the subject's visual interest.
The metasomal terga are brown, with a thin yellow band on segment 1 and a thin orange band on segments 2 and 3.
Metasomal segment 4 is predominantly orange, sometimes featuring a small, triangular black mark in the middle.
The legs are brown, with yellow tarsi, providing a nice contrast to the rest of the body.
The wings are also worth noting, as they have a brown tint to them.
Behavior and Habitat
Wasp Vespa are highly social creatures, living in large colonies with a single dominant queen. They work together to build complex hives.
Their colonies can number in the tens of thousands, with a strict social hierarchy in place. Each wasp has a specific role to play, from foragers to caretakers.
Vespa wasps are found in temperate regions around the world, often near human habitations. They're attracted to sweet smells and can be seen hovering around food and drink.
Host Prey Associations
Vespa velutina is known to hunt Apis mellifera, a species of honey bee, in its native range.
In its native range, Vespa velutina has a strong preference for Apis mellifera over Apis cerana, the eastern honey bee, due to the latter's defensive behaviors.
Vespa velutina also preys on a wide range of large-bodied insects.
This includes dragonflies, flies, and Orthoptera, which are all part of its varied diet.
Common
The Common Wasp is a social insect that thrives in various habitats. They are commonly found in Germany, specifically in Chemnitz.
Their colonies are usually established in the spring, with the queen laying eggs to start the new generation. Vespula vulgaris, the scientific name for the Common Wasp, has been documented in various locations in Chemnitz.

Here are the different castes of the Common Wasp:
The Common Wasp is active throughout the year, with different castes emerging at different times. The queen is responsible for laying eggs in the spring, while workers take over in the summer. Drones are present in the summer and fall, before dying off in the winter.
Bad Rising
The yellow-legged hornet, Vespa velutina, is particularly damaging to honey bee colonies.
This hornet is a cousin of the northern giant hornet, known as the Asian giant hornet or "murder hornet" in some media.
The Vespa genus includes true hornets, and the Vepula and Dolichovespula genera are types of yellow jackets.
The Family Vespinae includes wasps, with specific species of each genus shown in the diagram discussed in the article.
Vespa velutina is an invasive species found near Savannah, Georgia.
The Vespa genus is part of the wasp family, which are generally insects that lay eggs via an ovipositor, often modified into a stinger.
Curious to learn more? Check out: Giant Wood Wasp
Regional Variations
Vespa wasps can be found on every continent except Antarctica, with the highest diversity in tropical regions like Southeast Asia and the Amazon rainforest.
Some species of Vespa are specialized to live in specific types of environments, such as Vespa mandarinia, which is found in mountainous regions of Asia.
Vespa velutina, on the other hand, is well adapted to living in dry environments and is commonly found in Africa and Asia.
The social structure of Vespa colonies also varies by region, with some species forming large colonies and others living in smaller groups.
In some parts of the world, Vespa wasps are considered pests and are actively controlled by humans, while in other regions they are viewed as beneficial insects.
Frequently Asked Questions
Does Vespa mean wasp?
Yes, Vespa is derived from the Latin and Italian word for "wasp", due to its distinctive body shape resembling a wasp's body. The name is a nod to the vehicle's unique design.
Are Vespid wasps aggressive?
Yes, Vespid wasps are known for their aggressive behavior, which can be a concern for people working in orchards. Their painful sting is a result of this aggressive behavior, making them a less desirable option for biological control.
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