Lasius latipes
Temperature
20–26 °C
Humidity
55–75%
Colony size
3,000–20,000
Queen size
7–9 mm
Worker size
3.5–5 mm
Hibernation temp
6 °C
Diet
Care Guide
Lasius latipes is a fascinating ant species that will test the skills of even the most experienced keeper. Unlike typical ant species, *Lasius latipes* is a social parasite, meaning the queen cannot start a colony on her own. Instead, she infiltrates an established nest of another *Lasius* species, such as *Lasius niger* or *Lasius flavus*, kills or subdues the host queen, and then uses the host workers to raise her own brood. This unique founding behavior makes keeping this species a true challenge, as it requires a deep understanding of parasitic relationships and a careful hand to manage the host workers during the takeover. Once established, colonies can reach 3,000 to 20,000 workers. The queen measures 7 to 9 mm, while workers are smaller at 3.5 to 5 mm, with a slender, elegant build and a pale yellowish-brown colouration that blends beautifully with subterranean habitats.
In the wild, *Lasius latipes* relies heavily on honeydew from root aphids and small insects for protein, and this diet continues in captivity. They readily accept sugar water and honeydew substitutes, alongside protein sources like fruit flies, mealworms, or cricket pieces. Because they are fully dependent on host workers during the early stages, the initial provisioning must be done with care to avoid stressing the host colony.
Care difficulty
This species is not for beginners. The social-parasitic founding method demands precise timing and a steady supply of host workers. Even after a colony is established, *Lasius latipes* remains sensitive to disturbance and requires stable conditions. Advanced keepers will find it deeply rewarding, but this is a species that rewards patience and meticulous observation.
Housing
A formicarium for *Lasius latipes* should maintain temperatures between 20 and 26°C, with humidity levels of 55 to 75%. The nest area must have good moisture retention, as larvae develop best in slightly damp chambers. Because this ant is a subterranean specialist, provide deep, dark nesting spaces and reduce light exposure. Hibernation is essential: from late autumn through winter, the colony should be kept at a steady 6°C for several months to simulate natural dormancy. During this time, ensure they remain dry but have access to a small water source. A quiet, vibration-free location is critical, especially in the first year.
First days after purchase
When you receive your *Lasius latipes* colony, place the setup in a calm, dim environment and allow the ants to settle for at least 24 hours. Do not open the nest or offer food immediately. After this acclimation period, provide a small drop of sugar water and a few protein pieces, but avoid overfeeding. Monitor the interaction between the parasite queen and host workers closely — signs of aggression may require intervention. Patience is key: successful takeover can take weeks, and the colony will be fragile during this transition. Once the first *Lasius latipes* workers appear, you can slowly increase food and space.