Camponotus impressus
Temperature
24–28 °C
Humidity
50–70%
Colony size
300–1,500
Queen size
8–10 mm
Worker size
4–7 mm
Diet
Care Guide
Camponotus impressus is a robust and visually striking species of carpenter ant, native to tropical and subtropical regions of Southeast Asia. Workers are polymorphic, ranging from smaller minors around 4 mm to larger majors reaching 7 mm, while the queen measures between 8 and 10 mm. The entire colony is a deep, glossy black with subtle blue or purple iridescence under direct light, giving them an almost metallic sheen. This species is famous for its impressive nesting behavior in dead wood, where they excavate complex galleries. Despite their common name “carpenter ant,” Camponotus impressus does not damage healthy timber and is perfectly safe to keep in artificial formicaria.
One of the most interesting behaviors of Camponotus impressus is their sophisticated foraging strategy. They are active day and night, sending out scouts that lay chemical trails to food sources. Their diet is varied: they require a steady supply of protein (e.g., small insects, mealworms, or shrimp) and carbohydrates (sugar water, honeydew, or fruit). Unlike some Camponotus species, they do not need hibernation, making them an excellent choice for keepers in warmer climates or those who want year-round activity. The colony size typically ranges from 300 to 1,500 workers, offering a satisfying middle ground — large enough to be impressive, but not so huge that maintenance becomes overwhelming.
Care difficulty
Keeping Camponotus impressus is rated as intermediate. While claustral founding makes it relatively easy to start a colony, the ants are sensitive to prolonged dry conditions and sudden temperature fluctuations. Beginners with some experience in managing humidity and temperature will find them rewarding. The main challenge lies in providing consistent warmth and moisture without overwatering, as the larvae are particularly vulnerable to desiccation during early development.
Housing
A formicarium with a dry nesting area and a separate outworld works well for this species. They prefer a temperature between 24 and 28 °C and a relative humidity of 50–70 %. A heat mat placed under part of the nest creates a gradient, allowing workers to choose their preferred microclimate. The nest itself can be made of plaster, acrylic, or natural materials like cork or soft wood. Because Camponotus impressus is fond of chewing soft substrates, a grout or sand-clay mixture should be sealed properly. Always provide a clean water source; a test tube with a cotton plug or a water dispenser in the outworld is essential.
First days after purchase
Upon receiving your Camponotus impressus colony, place the setup in a quiet, dimly lit location. Let the ants acclimatise for at least 24 hours without disturbance. During this time, ensure the nest is slightly moist and the outworld contains a drop of sugar water and a small piece of protein. Avoid bright light and vibrations, which stress the colony. After the first few days, you can gradually increase observation, but always maintain stable humidity. With patience and careful monitoring, your Camponotus impressus will quickly settle and begin expanding their beautiful, intricate chambers.