The three types of termites in Australia, and why the split matters more than the name
Two houses can both have "a termite problem" and need completely different treatments, because the type, not the species name, is what decides that.
Genus is not the only way to sort Australian termites
Ask what types of termites Australia has and most answers reach straight for genus names: Coptotermes, Nasutitermes, Schedorhinotermes. Those matter, and the genera that damage houses covers them properly. But there is a second, more practical way to split the country's termites, and it is the one that actually changes how a problem gets treated.
That split is by where a colony lives and what it needs to survive there: subterranean, drywood, or dampwood. Almost everything a homeowner in Australia deals with falls into the first group. And knowing which of the three you have changes what a barrier or a bait system can actually do.
Subterranean termites: the ones that need the soil
Subterranean species nest in or near the ground and travel through soil, or through mud tubes built to bridge gaps above it, to reach timber. Coptotermes and Schedorhinotermes both belong here, and together they account for the large majority of serious structural damage in the country.
This group is why soil-based physical and chemical barriers exist at all. Cut off or disrupt the route between the soil and the timber and a subterranean colony struggles to reach the building, which is the whole logic behind a barrier system.
What makes drywood termites a different problem entirely?
Drywood termites do not touch the soil at any stage. A colony lives entirely inside the timber it is eating. It arrives by a winged flight directly into a roof void, a window frame or a piece of furniture, with no tunnel back to the ground to give it away.
That single difference undoes the standard defence. A soil barrier is built to stop something travelling up from the ground, and a drywood colony was never travelling through the ground in the first place. Drywood termites covers what actually gives this group away: hard, six-sided pellets pushed out of a small kick hole, not mud.
Dampwood termites: a moisture problem wearing a termite label
The third group needs timber that is already wet or partly decayed before it will move in. Find dampwood termites in a house and you have found two things, not one: a termite, and the ongoing moisture problem that let it in. Dampwood termites goes through what that combination usually points to.
Treating the termite here without fixing the leak, the ventilation gap or the ground contact that created the wet timber just resets the clock. The termite finding is a symptom. The moisture is the cause.
Of the three, this is the one most likely to turn up somewhere unexpected: a shower recess, a leaking gutter, a deck post standing in a garden bed that gets watered daily. Fix the water and the timber can dry out and stop being attractive. That is not true of the other two types.
Why the type matters more than the species name
| Type | Needs soil contact | What finds it first | What a soil barrier does to it |
|---|---|---|---|
| Subterranean | Yes, or a built mud tube | Mud tubes, damage near ground level | Directly targets the route it relies on |
| Drywood | No, never | Hard pellets pushed from a small kick hole | Little to no effect: wrong target entirely |
| Dampwood | No, but needs wet or decaying timber | Soft, moisture-damaged timber | Irrelevant until the moisture is fixed |
A licensed inspector working to AS 4349.3 identifies which type, and usually which genus, is present before recommending anything. That sequence is not paperwork: a treatment aimed at the wrong type does close to nothing.
Why the country label alone still tells you very little
Australia has more than 350 described termite species and only around twenty are recognised as damaging to timber in service. Knowing you have "an Australian termite" narrows nothing on its own. How many kinds of Australian termite there really are goes through why that number matters less than it sounds.
What actually narrows things down is the type, then the genus, then the species, worked out by a technician from soldiers under magnification, not from a search term. If you take one thing from this page, make it this: knowing "it's a termite" settles nothing. And knowing which of the three types you are dealing with is what tells an inspector where to look.
One more reason the type comes first: it also tells you how urgent the finding is. A subterranean colony is already connected to the ground and to whatever else it can reach, so it rarely gets less serious by waiting. A confined drywood infestation, by contrast, can sometimes sit at the same size for a long time before it is dealt with. Neither is a reason to delay an inspection, but they are not the same kind of urgent.
Frequently asked questions
What are the three types of termites found in Australia?
Subterranean, drywood and dampwood, split by where a colony lives and what it needs from the timber. Subterranean species need soil contact or a mud tube, drywood species never touch soil at all, and dampwood species need timber that is already wet or decaying. Almost all serious structural damage in Australia comes from the subterranean group.
Do all types of termites respond to the same treatment?
No, and that is the main reason the distinction matters. A soil barrier targets the route a subterranean colony uses to reach timber, which does close to nothing against a drywood colony that never travelled through soil. A licensed technician identifies the type before recommending a treatment plan.
Can drywood termites cause the same damage as subterranean ones?
Yes, within the piece of timber they occupy, though colonies tend to be smaller and confined to what they are already living inside. The bigger risk with drywood termites is how easily they are missed, since there is no mud tube or ground damage to give them away.
If I find termites in wet timber, is fixing the moisture enough?
No. Fixing the moisture stops the conditions that invited a dampwood colony in, but it does not remove the termites already there. Both need attention: the moisture source and the colony, assessed and treated by a licensed technician.
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
- Standards Australia. Australian Standards (AS 3660 termite management, AS 4349.3 timber pest inspection)