Tooth Ant

Workers measure 9–12 mm, while winged queens are slightly larger at 11–13 mm. Body color ranges from deep red to black. The mandibles are short but strong, and the legs are relatively short for the body size. The front edge of the clypeus is finely toothed, and the front margin of the pronotum (thorax) is toothed as well — the key features that distinguish this genus from other ground ants.

Widely distributed across South and Southeast Asia, from Pakistan to the Philippines, and from southern China down to the southern islands of Indonesia — including India, Bangladesh, Myanmar, Thailand, Malaysia, Indonesia, and Vietnam. It's a ground-dwelling forager that favors forested or shaded areas with moist soil. Nests are underground burrows with a circular entrance 3.5–5 mm wide, containing horizontal chambers stacked at different depths — upper chambers around 10–36 cm deep, with the deepest chambers reaching nearly 60 cm. The queen and larvae stay in the deepest chambers, while workers occupy the upper levels.

This is a fairly tough, easy-to-keep species compared to most predatory ants. The main challenge is maintaining consistently high humidity, since it naturally nests deep in moist soil — provide a generous substrate layer or burrowing material to mimic its natural multi-level nest structure. The colony size figure given here (50–300 workers) reflects what's commonly seen, not a maximum.

Good to Know

The genus name Odontoponera combines the Greek odonto- ("tooth") with the genus Ponera, a large group of predatory ants, meaning "toothed Ponera" — a direct reference to the small teeth along its clypeus and thorax margins. The genus contains just two species, O. denticulata and O. transversa, both locally abundant within their respective ranges.

Odontoponera transversa builds its nest as a series of stacked horizontal chambers deep in the soil, with the queen kept safest in the deepest chamber while workers spread out through the shallower ones on defense.

It's a generalist predator and scavenger with a particular fondness for termites, foraging over a meter from the nest and hunting mostly soft-bodied insects. This multi-level nest structure lets each caste occupy its own zone efficiently, while also offering some protection from predators and surface flooding.

A flexible eater that both hunts and scavenges. Crushed fruit flies, small pre-killed crickets, or roaches all work well. Ideal temperature is above 25°C, though it stays active down to about 18°C — it shouldn't be kept at low temperatures for long, though. Humidity should be 70–90%, reflecting its naturally deep, moist nesting habit. Colonies usually have one or a few queens, though polygyny (multiple queens) has been observed in some cases.