Termite Workers, Soldiers and Swarmers: Who Does What

When you find termites in your home, you may see different kinds: small pale ones, ones with larger heads, and ones with wings. These are different castes, each with a job. Knowing them helps you understand what you are looking at.

This guide explains the main castes and what each indicates.

The short answer

A termite colony has workers, which forage, feed the colony and build tunnels and are the ones that damage wood; soldiers, which defend the colony and have enlarged heads and jaws; and reproductives, including the king and queen and the winged swarmers that leave to start new colonies. Workers are the most numerous and the least visible. Seeing swarmers means a mature colony nearby, while seeing workers and soldiers in a broken mud tube means active feeding.

Workers

• Appearance: Small, pale, soft-bodied, wingless.
• Job: Find food, feed other castes, build and repair tunnels and nests.
• Importance: They cause the damage to wood and other cellulose.
• When you see them: When mud tubes or infested wood are broken open.

Soldiers

• Appearance: Similar to workers but with a larger, darker head and strong jaws.
• Job: Defend the colony against ants and other threats.
• Importance: Their presence confirms a colony. They are usually fewer than workers.
• When you see them: Near breaks in tunnels, protecting the opening.

Reproductives

• Queen and king: Live deep in the nest. The queen lays eggs, sometimes in huge numbers over her life.
• Swarmers (alates): Winged adults that leave the colony to mate and start new ones, usually after rain.
• When you see them: Swarmers around lights and discarded wings on sills.

Comparison

1. Workers: Most numerous, pale, feeding and building.
2. Soldiers: Larger heads, defending.
3. Swarmers: Winged, dark, reproducing and dispersing.

What it means for you

• Workers or soldiers in wood or tubes: active infestation.
• Swarmers indoors: a mature colony nearby, possibly in the structure.
• Only wings found: swarmers emerged recently.

What to do

Photograph what you see, avoid disturbing the colony more than needed and book a professional inspection. Treatment focuses on cutting off the colony's access and addressing the source.

When to call a professional

Whenever you find any caste inside your home. A specialist can identify the species and plan treatment.

Frequently asked questions

Which caste damages wood?

Workers do the feeding and damage.

Do soldiers bite people?

They may nip if handled but are not a danger to humans.

Are swarmers harmful?

They do not damage wood, but signal a nearby colony.

Where is the queen?

Deep inside the nest, usually out of reach.

This guide is part of IPest's complete resource on termite control. For identification help, prevention and treatment options, see our full termite treatment guide for Bangalore.