Mastotermes darwiniensis: the giant northern termite
A very different insect from the southern termites. Here is what the name means and what it does not let you decide.
What Mastotermes darwiniensis is
Mastotermes darwiniensis is the giant northern termite. It lives across the tropical north of Australia, and it is a different kind of insect from the termites in southern suburbs. It is the only living member of its family, which is why entomologists treat it as a special case.
If you live in the tropics, this is a species you hear about. If you live in Melbourne or Hobart, you can mostly set it aside.
Why it is treated as a serious pest in the north
Three traits set it apart. Colonies can be very large. The workers eat a wide range of materials, not only sound timber. And they stay active across a long season, because the climate does not shut them down.
Reports from northern Australia describe damage to living trees, crops and stored goods as well as buildings. In a house the target is still timber, but the same appetite is why the species has such a hard reputation.
| What you might notice | What it can mean | What it cannot tell you |
|---|---|---|
| Mud lining on a post or wall | Subterranean termites are moving to timber | The species |
| Damage to a living tree | A colony is feeding on the property | Whether it is also in the house |
| Thin, papery timber | Wood eaten from within | Whether the colony is still active |
| Winged termites at a light | A mature colony is somewhere nearby | That it is yours |
Where it lives, and where it does not
Its range sits in the warm north, in parts of the Northern Territory, Queensland and the Kimberley. It does not belong to the cool south. Living outside that range does not make you safe from termites, though. Other subterranean species do the same work further south.
Be careful with the idea that range tells you what is in your walls. Someone in the north can have a different species in the subfloor. Someone elsewhere can be told "giant northern termite" by a neighbour who is guessing. Neither is a diagnosis.
You cannot name it yourself
Species are separated by looking at soldiers under magnification. A photo of a tube or a chewed beam will not do it. We do not identify termites from pictures or descriptions, and a confident answer from a stranger online is a reason to be careful.
Does the name change your next step? Not much. The job is the same for every species: find the activity, find the entry point and have a licensed technician manage it.
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 the Australian termites that damage houses puts this species in context. Then let the inspector do the identifying.
Frequently asked questions
Is Mastotermes darwiniensis a white ant?
Yes. White ant is the everyday Australian name for termites, and this is the giant northern termite of the tropical north.
Can I tell if I have Mastotermes darwiniensis?
Not reliably. Species are separated on soldiers under magnification, so an inspector has to do it.
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.
Do I need to worry about it in southern Australia?
It lives in the warm north, but other subterranean termites attack houses further south. An inspection tells you what is active on your property.
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)