Camponotus pseudoirritans is a large Asian Camponotus with an elegant build, conspicuous activity, and warm honey-golden coloring on the abdomen of some castes. Its appeal extends beyond appearance: as the colony develops, the transition from small workers to larger individuals and massive soldiers becomes increasingly visible. The species originates from Southeast Asia and is described as primarily nocturnal in nature, although captive colonies may adapt to light and become active in the arena at different times of day.

One queen at the heart of the colony

Camponotus pseudoirritans is strictly monogynous, meaning that a colony should contain only one queen. Introducing another queen or attempting to combine several founding queens creates a serious risk of conflict and death. Expansion should therefore come through suitable nesting space and an adequate food supply, not through the addition of queens.

The species develops pronounced worker polymorphism. Workers vary in size, while soldiers stand out through their broad heads and powerful build. These large individuals do more than defend the nest. They can retain liquid carbohydrate food in their crops and distribute it to other members of the colony, including the queen and developing brood.

Dry chambers with localized moisture

A tropical origin does not mean that the entire nest should remain wet. Camponotus pseudoirritans requires a combination of predominantly dry living chambers and a localized humid area. This arrangement lets the colony keep larvae nearer the moisture source while placing cocoons and resting workers in drier sections. Constant dampness and stagnant air are undesirable for this species.

Ventilation, controlled hydration, and sufficient chamber height for the large queen and soldiers are important when choosing a formicarium. The source describes a PETG construction with a partial gypsum insert. In that configuration, gypsum occupies 15–20% of the living area, the gypsum layer is at least 6 mm thick, and the chambers are 12 mm high. This layout is intended to create a localized moisture gradient while leaving most of the nesting space dry. The stated humidity reference is 60–70%, though the actual regime should be assessed according to the formicarium design and the colony’s behavior.

Material selection also has practical consequences. Ants of this genus can damage soft components, so exposed polystyrene should not serve as a structural part of the nest. Wooden and plywood elements require particularly careful moisture control and routine inspection of their surfaces. Whatever formicarium is used, ventilation openings should remain clear, water should not pool inside chambers, and every joint accessible to the ants should be checked for damage.

Feeding the colony

The diet described in the source has two main components:

• protein food such as Turkestan cockroaches or mealworms;
• carbohydrate food such as sugar syrup or feeding jelly intended for ants.

The source advises against relying on fruit flies as the principal protein item because of their small size. Portions should correspond to colony size, and uneaten remains should be removed before they foul the arena. Introduce unfamiliar foods in small amounts and observe whether workers accept them. Syrup and jelly should be presented in a way that lets the ants feed without becoming trapped in sticky liquid.

Temperature and routine observation

This is a tropical species and, according to the supplied information, it does not require winter diapause. The stated options are room-temperature conditions or gentle heating up to 26°C. If supplementary heat is used, warm only part of the setup so the colony retains a temperature choice. Monitor the nest to prevent excessive drying or overheating.

Frequently asked questions

Can two queens be housed together?
No. Camponotus pseudoirritans is described as strictly monogynous, so a colony should have one queen only.

Why does the colony remain in the dry section?
This can be normal for the species. The ants may reserve the more humid area for brood while workers and cocoons occupy drier chambers.

Does the species need winter diapause?
No diapause is specified in the source. As a tropical Asian ant, it is kept under stable warm conditions without a seasonal cold period.