Coptotermes frenchi: a south-eastern white ant that eats houses
A colony can nest well away from the house. Here is what the name means and what it does not let you decide.
What Coptotermes frenchi is
Coptotermes frenchi is a subterranean termite from south-eastern Australia. It belongs to the genus Coptotermes, the group behind much of the structural damage to Australian houses. It is one of the species people mean when they say "white ants".
It is a species you read about, not one you pick out in your own home. Separating it from its close relatives takes soldiers under magnification.
Why it matters if you live in the south-east
This is a species of the cooler, wetter side of the continent, including parts of Victoria, New South Wales and Queensland. Colonies can nest in trees and stumps, or in the ground. A nest can also end up inside the structure of a building, and a hidden nest is much harder to deal with than one in a stump.
That is the point worth taking away. The nest is not always where you would look. A colony can feed on a house from a tree a few gardens away.
| What you might notice | What it can mean | What it cannot tell you |
|---|---|---|
| Mud tubes on a pier or wall | Subterranean termites are travelling to timber | The species |
| Hollow-sounding timber | Wood eaten from the inside | Whether the colony is active |
| Swarming winged termites | A mature colony is nearby | That it is in your house |
| Damage to a tree or stump | A colony on the property | Which colony is feeding on the building |
A name does not change what you do
Say an inspector tells you it is this species. Does your next step change? Not really. Whatever the species, you find the activity, find how the termites got in, and have a licensed technician manage it.
That is why this page is about understanding, not diagnosis. We do not identify termites from photos or descriptions. A wrong species can change the treatment.
Where it gets into a house
Subterranean termites need moisture and a hidden path. They enter through ground contact, slab cracks, service penetrations, or any spot where a barrier has been bridged. Damp subfloors with poor airflow help them. Our guide to moisture, subfloors and ventilation covers what to fix.
Stored timber against a wall, garden beds piled against the cladding and render that runs down to the soil all hand them a way in. None of this is unusual.
What not to do if you suspect it
- Do not break the mud tubes. The workers rebuild and may come back by a hidden route. The inspector also reads the tubes as evidence.
- Do not spray. A supermarket insecticide reaches a few workers, not the colony, and can push it to feed somewhere you cannot see.
- Do not dig into the timber or the nest. Disturbing a colony scatters it and makes it harder to find.
- Do not assume a small patch means a small problem. Hidden activity is judged on the whole property.
What to do instead
Book a timber pest inspection to AS 4349.3 with a licensed inspector. Leave any evidence exactly as you found it. If activity is confirmed, treatment and barriers are applied by a licensed pest management technician using products registered by the APVMA. Ask what they found, where, and how they know it is active.
Our guide to mud tubes shows what the evidence looks like. Then step back and let the inspector read it.
Frequently asked questions
Is Coptotermes frenchi a white ant?
Yes. White ant is the everyday Australian name for termites, and this species is a subterranean one from the south-east that attacks houses.
Can I tell if I have Coptotermes frenchi?
Not reliably. Species are separated on soldiers under magnification, and one property can hold more than one colony.
Should I treat it myself?
No. Sprays and disturbance can scatter the colony and hide the damage. Termiticides are registered by the APVMA and applied by a licensed pest management technician.
Does a nest in a tree mean it is attacking my house?
Not necessarily. It means there is a colony on the property. Whether it feeds on the building is an inspection question.
Sources
What this page explains is based on these official sources. If you check one and it does not match what you read here, send it to us and the article gets corrected.
- Department of Health, Victoria. Pest control, termites
- Queensland Building and Construction Commission. Protect against termites: termite management systems and inspections
- Standards Australia. Australian Standards (AS 3660 termite management, AS 4349.3 timber pest inspection)