Camponotus laevigatus
Temperature
22–28 °C
Humidity
50–70%
Colony size
1,000–5,000
Queen size
13–15 mm
Worker size
6–12 mm
Hibernation temp
10 °C
Diet
Care Guide
Camponotus laevigatus, commonly known as the smooth carpenter ant, is a striking North American species prized for its glossy black exoskeleton and robust size. The queen measures between 13 and 15 millimeters, while workers range from 6 to 12 millimeters, displaying modest polymorphism — smaller minors handle brood care and foraging, while larger majors defend the nest and process tough food items. Colonies grow steadily to several thousand individuals, making them a rewarding choice for keepers with some experience.
Like all carpenter ants, Camponotus laevigatus excavates galleries in wood, but does not consume it. In the wild, they nest in dead timber, stumps, or fallen logs. Inside the formicarium, they thrive in setups that offer a combination of wood or cork nests and a separate outworld. Their diet is highly adaptable: they eagerly accept insects such as crickets, mealworms, and flies, and will also take sugar water, honeydew, and protein-rich offerings like egg or boiled chicken. Providing a balanced mix of carbohydrates and protein is essential for colony growth and brood rearing.
Care difficulty
Keeping Camponotus laevigatus is considered intermediate. While the founding stage is claustral and relatively straightforward, the colony’s need for a proper hibernation period makes timing and planning important. These ants are sensitive to disturbance during early colony development, and their wood-nesting habit requires that the nest material remains stable and free of mold. Once established, they are hardy and forgiving, but beginners should be comfortable with basic temperature and humidity management.
Housing
A formicarium with a natural wood or cork nest block works best, as it allows the ants to excavate and feel secure. The nest area should be kept moderately humid — between 50 and 70 percent — while the outworld can be drier. A heat cable or mat can maintain the recommended temperature range of 22 to 28°C, with a slight gradient so workers can choose their preferred spot. During winter, these ants require a true diapause: reduce temperature to about 10°C for two to three months, keeping the nest slightly moist but reducing food. Skipping hibernation can weaken the colony and halt reproduction.
First days after purchase
Upon receiving your Camponotus laevigatus colony, place the formicarium in a quiet, dimly lit location. Allow the ants a full day to acclimate before offering any food. Start with a small drop of sugar water and a single small insect; observe their response. Avoid opening the nest or shining bright lights directly into it. Over the first week, gradually introduce a routine of feeding every two to three days while keeping the outworld clean. If the colony seems stressed, reduce disturbances and ensure the humidity is correct. With patience, you will soon see these beautiful ants confidently exploring their new home.