Temnothorax nylanderi
Temperature
20–26 °C
Humidity
50–70%
Colony size
100–400
Queen size
3–3.5 mm
Worker size
2–2.5 mm
Hibernation temp
8 °C
Diet
Care Guide
Temnothorax nylanderi is a delightfully small and gentle ant species, perfect for keepers who appreciate intricate behaviour in a compact package. These ants are monomorphic, meaning all workers are roughly the same size, measuring just 2 to 2.5 mm, while the queen reaches a modest 3 to 3.5 mm. Despite their diminutive stature, their colonies are remarkably organised and cohesive, typically numbering between 100 and 400 workers at maturity. One of the most endearing traits of this species is their calm and non-aggressive nature—they rarely attempt to escape and are far less prone to stress than many larger ants, making them an absolute joy to observe up close.
In the wild, Temnothorax nylanderi are cavity dwellers, often nesting in hollow acorns, twigs, or under bark. This natural preference means they thrive in small, enclosed formicariums with plenty of nooks and crannies. Their diet is straightforward: they require a balance of protein and carbohydrates. Offer them small insects like fruit flies or pinhead crickets, alongside regular sugar water or honey. They will also accept soft protein sources such as boiled egg or insect jelly. A clean, consistent supply of fresh water is essential, as these tiny ants dehydrate quickly.
Care difficulty
Keeping Temnothorax nylanderi is an excellent choice for beginners. Their claustral founding means a newly mated queen can rear her first generation of workers without needing any food—she seals herself in a small test tube or cavity and relies on her stored fat reserves. Once the first nanitics appear, the colony grows steadily and is very forgiving of minor keeper mistakes. They tolerate a wide temperature range from 20 to 26°C and humidity between 50 and 70 percent. However, one critical requirement is a genuine hibernation period: they must be cooled to around 8°C for several months each winter to reset their biological cycle. Skipping this can lead to queen exhaustion and colony decline.
Housing
Because Temnothorax nylanderi are so small, they can be kept in very compact setups—a small test tube connected to a tiny outworld is sufficient for years. The nest area should offer several chambers with moderate humidity, but avoid over-wetting. These ants are not heavy excavators, so a pre-formed acrylic or plaster nest with small rooms works perfectly. The outworld should have a thin layer of sand or soil for foraging, along with a small water source and a feeding dish. Keep the formicarium in a quiet spot; while they are less sensitive than some species, vibrations can still disturb brood development.
First days after purchase
Upon receiving your Temnothorax nylanderi colony, place the entire setup in a dim, vibration‑free location and let the ants settle for at least 24 hours. Resist the urge to open the nest or handle the container. After this period, offer a tiny drop of sugar water and a small insect piece near the entrance. Observe from a distance—these ants quickly become active and begin exploring once they feel safe. Ensure the humidity source is topped up and that the hibernation schedule is already planned for the coming months. With patience and minimal interference, your tiny colony will soon reveal its wonderfully tranquil and fascinating world.