Linepithema cerradense - "Cerrado Trailing Ant"
Linepithema cerradense is a relatively small, monomorphic ant species, meaning all worker ants are roughly the same size. These ants are generally light to medium brown in coloration, with a compact body and a somewhat flattened mesosoma when viewed from the side. They are known for forming inconspicuous nests, often just a small entrance hole in open soil. Like other members of the Linepithema genus, they are efficient foragers, quickly recruiting nestmates to new food sources via chemical trails.
- Difficulty: Medium
- Origin & Habitat: South America (Paraguay, Brazil, Bolivia) in Cerrado grasslands, open soil, disturbed areas like roadsides, occasionally rainforest edges. They prefer warmer climates..
- Colony Type: Polygyne (multiple queens), semi-claustral (often budding from existing colonies or queens foraged for support during initial founding) founding.
- Size & Growth:
- Queen: 4.0-5.0mm
- Worker: 2.0-3.0mm
- Colony: Large (tens of thousands to hundreds of thousands), potentially Supercolony. Fast, especially under optimal conditions with multiple queens. growth.
- Antkeeping:
- Temperature: Maintain a temperature range of 24-28°C for optimal activity and brood development. They can tolerate temperatures from 20-30°C, but consistent warmth within the preferred range encourages faster growth. Avoiding temperatures below 18°C is advisable..
- Humidity: Aim for a moderate to high humidity level, ideally between 60-80% in the nest. This can be achieved by maintaining a consistent water source in the formicarium and ensuring parts of the nest remain moist..
- Diapause: Not required. Not specified at Not specified.
- Nesting: These ants prefer nesting in soil, but they are adaptable and will readily inhabit various artificial setups like acrylic nests, Ytong (aerated concrete), or even naturalistic setups with a substrate layer. They appreciate having multiple nesting options or the ability to move freely between chambers..
- Behavior: Medium (towards other ant species, high recruitment to food) aggressiveness.
- Common Issues: Escape artists, Mold in nest (due to humidity), Colony stalling (if conditions are not met), Overfeeding leading to waste, Humidity fluctuations.
One of the key considerations when keeping Linepithema cerradense is their propensity for rapid colony expansion and polygyny. Like their close relative, the Argentine ant, these ants can develop into very large colonies with numerous queens. This rapid growth means you'll need to be prepared for colony upgrades sooner rather than later, ensuring adequate space and resources are always available. They are also highly mobile and will readily relocate their brood if conditions aren't to their liking, which can be an interesting behavior to observe.
Their foraging behavior is quite impressive; Linepithema cerradense are known for their strong chemical recruitment trails. When they discover a food source, workers quickly lay down pheromone trails, leading to a swarm of nestmates arriving to collect the bounty. This makes feeding them an engaging spectacle, but also means good escape prevention on your outworld is absolutely critical. Even the tiniest crack or unsealed edge can become an escape route for these determined foragers.
Diet-wise, Linepithema cerradense are generalist omnivores, readily consuming a variety of sugary liquids and insect protein. They have a particular fondness for honeydew, often tending sap-feeding insects in their natural habitat. In captivity, a varied diet of sugar water, fruit, and different insect types (like small crickets or mealworms) will keep them healthy and thriving. Offering a diverse range of foods not only supports colony health but also provides interesting foraging observations.
While not known to be as invasive as the notorious Argentine ant (Linepithema humile), it is always crucial to exercise extreme caution to prevent any non-native species from escaping into the local environment. Proper containment protocols, such as using fluon barriers, secure lids, and even a moat system for your outworld, are essential. Responsible antkeeping ensures the well-being of both your colony and the native ecosystem around you.
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