Why are they called Weaver ants? Unraveling the Mystery

Weaver ants, scientifically known as Oecophylla, are fascinating creatures that intrigue people with their unique behaviors and remarkable characteristics. These ants have earned their name due to their exceptional nest-building skills. They construct their nests by weaving together leaves using their larval silk.

As you learn about these tiny insect architects, you’ll discover that weaver ants display a great sense of community and cooperation. Their teamwork allows them to create extraordinary nests high up in the trees, which not only provide safety from predators but also grant them easy access to food sources.

With their impressive engineering abilities and remarkable social structure, it’s no wonder that weaver ants have captivated the interests of researchers and nature enthusiasts alike. So the next time you encounter these intriguing insects, take a moment to appreciate the intricate nests they construct and the incredible teamwork that makes it all possible.

Understanding Weaver Ants

Physical Characteristics

Weaver ants (Oecophylla) are a fascinating species of ant. They come in two main species: Oecophylla smaragdina and Oecophylla longinoda. These ants can vary in size and color. Oecophylla smaragdina, also called green ants, have a bright green gaster and reddish head1. In contrast, Oecophylla longinoda has a more uniform coloration, usually red or brown. Within a colony, you will find major and minor workers. Major workers have larger mandibles, while minor workers have smaller bodies and more delicate features2.

  • Major workers: larger mandibles, bigger size.
  • Minor workers: smaller body, more delicate features.

Behavioural Traits

Weaver ants are territorial eusocial insects3. They use their functional stings and painful bites to defend their territory. Communication among the ants is facilitated by pheromones, including alarm pheromones.

  • Territorial and defensive behavior.
  • Communication via pheromones.

These ants have amazing nest-building skills. They use their mandibles and their antennae to manipulate leaves and weave a nest4. This behavior is the reason behind their name: Weaver ants. They work together as a team, with each ant playing a specific role to ensure a strong and secure nest.

  • Skilled nest-builders.
  • Work as a team.

In summary, understanding Weaver ants involves learning about their physical characteristics, such as their size, color, and differences between major and minor workers, as well as their behavioral traits, like their territorial behavior, communication, and nest-building skills.

Taxonomy and Geographical Distribution


Weaver ants belong to the genus Oecophylla, which is classified under the family Formicidae, subfamily Formicinae, and order Hymenoptera. These ants are closely related to other ant species such as Camponotus and Dendromyrmex. The unique characteristic of weaver ants is their ability to build nests using leaves, which they weave together using silk produced by their larvae.

Geographical Distribution

Weaver ants, also known as green ants or mango ants, can be found in various regions across Asia. Their geographical range spans from India and Sri Lanka to China. These ants thrive in tropical rainforests, where they often establish their colonies on trees.

  • In India, they’re commonly found in mango orchards.
  • In China, they can be spotted on lychee, longan, and mango trees.

When you find a weaver ant colony, you’ll notice that the nests are made of several leaves held together with silk threads. This fascinating behavior has earned them the name “weaver ants.” So next time you’re in the tropical rainforests of Asia, take a moment to appreciate these incredible creatures and their ingenious nest-building skills.

Nest Construction and Habitats

Nest Construction

Weaver ants are unique among ant species due to their incredible nest-building abilities. These ants use larval silk and living leaves to construct their nests in trees. The worker ants cooperate to pull and fold the leaves together, creating a secure structure. Then, they use the larvae’s silk to bind the leaves, forming a sturdy nest for the colony. This process helps protect the ants from predators and the elements.

Some interesting features of weaver ant nests include:

  • Made from living leaves
  • Constructed using larval silk
  • Built-in trees for protection


Weaver ants, also known as obligately arboreal ants, live primarily in trees. These ants prefer habitats with an abundance of trees, as this is essential for their nest construction. The species can be found in various types of trees and forests, showcasing their adaptability and resilience.

Examples of habitats for weaver ants:

  • Rainforests
  • Mango and citrus orchards
  • Deciduous and evergreen forests

Remember, weaver ants need trees for their unique nest construction, which sets them apart from other ant species. So, when you observe these remarkable insects, it’s crucial to consider their habitats and the availability of trees for them to build their nests.

Diet and Predators


Weaver ants are a fascinating ant species that live in colonies consisting of a queen, workers, and larvae. Their diet mainly consists of food sources such as honeydew collected from Hemiptera insects and various prey items. As foragers, they are quite efficient in seeking out food sources for their colonies.

For instance, they often feed on caterpillars and other small insects. Additionally, they maintain a mutually beneficial relationship with Hemiptera insects like aphids by providing them protection in exchange for honeydew, which is a sweet and nutritious substance these insects produce.


Though weaver ants are known to be aggressive defenders of their nests, they still face a number of predators in their environment. Birds are among the most common predators that can disturb and prey upon weaver ant colonies.

However, it’s essential to note that weaver ants also provide provisioning services to various organisms in their ecosystem. By controlling pest populations through their predatory behavior, these ants indirectly benefit the plants they inhabit and contribute to a balanced ecosystem.

In summary, weaver ants play a crucial role not only within their colonies but also in the broader ecosystem through their diet and relationships with other organisms. They are both predators and prey in the complex web of life.

Weaver Ants and Humans

Weaver Ants in Pest Control

Weaver ants are highly effective biocontrol agents for many types of agricultural pests. Their aggressive foraging behavior and territorial nature help to control pests in natural environments like forests, orchards, and plantations. By defending their territories, they prevent the spread of various pests, reducing the need for harmful chemical pesticides.

There are several benefits of using weaver ants in pest control:

  • They are a more sustainable and eco-friendly solution compared to chemical pesticides.
  • They can target a wide range of pests, such as caterpillars, beetles, and fruit flies.
  • Their presence can help increase overall yield and crop quality.

Weaver Ants in Medicine and Cuisine

In addition to their role in pest control, weaver ants have a valuable place in traditional medicine and cuisine. Weaver ant venom has been found to possess antibacterial properties, which could make it a potential ingredient for developing new medicines.

Weaver ants are also considered a delicacy in some countries, such as Thailand and Indonesia. They can be eaten as a snack or used to flavor dishes. Some of their nutritional benefits include:

  • Rich in protein and essential amino acids.
  • Low in fat and calories.
  • Good source of vitamins and minerals.

Weaver Ant Husbandry

Weaver ant husbandry involves the cultivation and management of weaver ant colonies for various purposes, such as pest control or food. It requires providing appropriate nesting sites, suitable food sources, and protecting the colony from potential predators.

Managing a weaver ant colony can be challenging but rewarding. Here are some tips for successful weaver ant husbandry:

  • Regularly observe your colony to monitor its health and well-being.
  • Provide a safe and suitable environment for nesting, such as tree branches or artificial nesting boxes.
  • Offer a diverse range of food sources, such as insects and plant nectar, to meet the colony’s nutritional needs.

By understanding the relationship between weaver ants and humans, it is possible to harness their natural abilities for our benefit while also protecting and conserving these fascinating insects.

Interesting Facts and Features

Weaver ants are fascinating creatures with unique characteristics. For instance, their color ranges from yellowish-brown to red, making them stand out in their environment. They are known to aggressively defend their territory from intruders, adding to their impressive reputation.

These ants live in a complex living chain, where each ant plays a crucial role. Some examples of their tasks include feeding each other and constructing nests by weaving leaves together with their larvae’s silk, hence their name “weaver ants”.

A fascinating fact is their relationship with citrus ants. Weaver ants are known for keeping citrus trees healthy by controlling pests and providing an environment free of diseases. This mutual relationship is beneficial to both the citrus trees and weaver ants.

Here are some key features of weaver ants:

  • Highly territorial and will protect their nests
  • Work together as a colony to build and maintain their nests
  • Effective predators of various pests, benefitting farmers and gardeners

Their role in the ecosystem is significant, as they control pest populations and contribute to maintaining the ecological balance. Don’t underestimate their small size; they are scarily effective when challenging their enemies.

In summary, AntWiki is an excellent resource to learn more about weaver ants and their captivating characteristics. Understanding their place in the ecosystem, their unique living chain, and remarkable features will surely increase your appreciation for these fascinating creatures.


  1. Weaver Ants – Oecophylla smaragdina – Overview

  2. AntWeb: Oecophylla longinoda

  3. Weaver Ants: AntWiki

  4. Levenhagen, N., & Tschinkel, W. R. (2018). Efficient foraging and work sharing by weaver ant majors and minors. Behavioral Ecology and Sociobiology, 72(9), 152.

Reader Emails

Over the years, our website, whatsthatbug.com has received hundreds of letters and some interesting images asking us about these insects. Scroll down to have a look at some of them.

Letter 1 – Weaver Ant from Thailand


Oecophylla (Weaver Ant)
Hello Bugman
I thought your viewers may enjoy this picture of what I guess is an Oecophylla (Weaver Ant) having a chew on my finger. These little bundles of joy are probably the dominant predators in our garden give or take the odd snake. We live in Thailand. Regards

Hi Sean,
Thank you for sending us your photo of a Weaver Ant. We did some research, and would love it if you could provide us with an image of the nest they weave from living leaves.

Update: (01/04/2007)
Here’s a picture of one of the small satellite nests. The main soccer ball size nests (and there are many) are high up in a Jack Fruit tree and I can’t get a clear picture unfortunately. The tree is visible on Google Earth so I’ve attached a .kmz file so you can see where these ants are in Thailand. I don’t think that Wikipedia article is quite right with respect to ‘…and are known for their painful, irritating sting’. Thankfully they’re stingless. I guess they don’t need a sting with those jaws. They seem to do very well without one. Regards

Hi again Sean,
Thanks so much for the additonal photo and information.


  • Bugman

    Bugman aka Daniel Marlos has been identifying bugs since 1999. whatsthatbug.com is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

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  • Piyushi Dhir

    Piyushi is a nature lover, blogger and traveler at heart. She lives in beautiful Canada with her family. Piyushi is an animal lover and loves to write about all creatures.

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