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Termite Size and Identification: What You Are Looking At

Workers are 3–6 mm and pale; swarmers about 10 mm with equal wings. The wing length and the antennae are what separate them from flying ants.

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Workers 3–6 mm, pale and soft. Swarmers about 10 mm, dark. And the thing that separates a swarmer from a flying ant is the wings.

Size by caste

What you are likely to be looking at
CasteLengthAppearanceWhere you see it
Worker3–6 mmCreamy white, soft, blindInside wood and mud tubes
Soldier3–6 mmPale body, large dark head and jawsDefending a broken tube
Swarmer (alate)~10 mm with wingsDark brown or black, four equal wingsFlying, or as shed wings
QueenMuch larger in mature coloniesHugely swollen abdomenNever seen outside the nest

A worker is about the length of a grain of rice and is the reason people reach for the phrase “small white maggots” — but maggots have no legs, and termite workers have six.

Termite or flying ant

The three-point check

Wings — termite: four, equal, extending well past the body. Ant: front pair clearly longer than the rear.

Antennae — termite: straight, beaded. Ant: distinctly elbowed.

Waist — termite: none, a broad even tube. Ant: obvious pinch.

Any one usually decides it. All three together are conclusive.

Both swarm seasonally, often after warm damp weather, which is why the confusion arises at exactly the time it matters most.

Reading the damage instead

Often easier than catching an insect:

  • Mud tubes — pencil-width earth tunnels up foundations, walls or piers. Termites, and close to diagnostic
  • Galleries packed with soil and faecal material, dirty-looking. Termites
  • Clean galleries with fine powder pushed out. Woodworm beetles
  • Clean galleries with coarse shavings outside. Carpenter ants
  • Wood sounding hollow when tapped, paint blistering, floors flexing
  • Discarded wings on sills and in cobwebs

What to do about it

Identification is worth doing. Treatment is not a DIY project.

Subterranean termite colonies live in the soil and extend into a structure, so a treatment that does not reach the colony achieves nothing. If you have mud tubes, swarmers indoors, or shed wings on interior windowsills, get a professional inspection — and in many regions an annual inspection is routine regardless.

Common questions

How big is a termite?

It depends which caste you are looking at. Workers, the ones found in damaged wood, are about 3 to 6 mm long, soft-bodied and creamy white — roughly the length of a grain of rice and often mistaken for small maggots. Soldiers are similar in length with noticeably larger darker heads and jaws. Winged swarmers, the stage most people actually see, are around 10 mm including wings and are dark brown or black. Queens in mature colonies of some species are far larger, but they are never seen outside the nest.

How do you tell a termite from a flying ant?

Three features settle it. Termite wings are all four the same length and extend well past the body, while a flying ant's front wings are clearly longer than the rear pair. Termite antennae are straight and look beaded; ant antennae have a distinct elbow bend. And a termite's body is a broad even tube with no waist, where an ant has an obvious pinch between thorax and abdomen. Any one of those is usually enough, and all three together are conclusive.

What do termite workers look like?

Small, soft, creamy white to pale translucent, with no wings and no eyes to speak of, around 3 to 6 mm long. They are the caste that actually eats wood and the one you find if you break open damaged timber or a mud tube, and they avoid light so they scatter and retreat quickly when exposed. People frequently mistake them for maggots or for small pale ants, but ants of that size are never that pale and have a visible waist.

What does seeing winged termites mean?

It usually means an established colony nearby has produced reproductives, and if they are emerging inside a building it generally indicates an infestation in or under that structure rather than one outside. Swarms are seasonal and often follow warm damp weather. Discarded wings on windowsills are a common first sign, because swarmers shed their wings shortly after flying. Seeing them is a reason to get a professional inspection rather than to treat it yourself.

What else looks like a termite?

Flying ants are the main confusion, especially during their own seasonal swarms. Beyond that, people mistake woodworm beetle larvae, carpenter ant workers and various pale soil insects for termite workers. The useful distinction in damaged timber is the frass: termites pack galleries with soil and faecal material and leave them dirty, while woodworm and carpenter ants leave clean galleries and push out powdery dust or coarse shavings respectively.

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