Lasius alienus

Lasius alienus is a good example of why not every beginner-friendly ant is as visible as Lasius niger. It is hardy, fully claustral, and calm in captivity, but it is more tied to open, dry habitats such as chalk grassland and warm disturbed ground. For a keeper who wants a native Lasius that stays a little more understated, it is a sensible second choice.

Keeping notes

Founding is fully claustral, so treat a fresh queen like Lasius niger: dark test tube, stable room temperature, no feeding until workers arrive. Once workers are present, offer sugar water and small insects in a simple outworld.

This species appreciates a slightly drier setup than the more moisture-tolerant garden ants, but the founding test tube still provides all the humidity a queen needs. In a proper nest, give a damp zone and a drier zone rather than keeping everything wet.

Watch for

• Identification — queens and workers can be confused with other dark Lasius. Buy from a seller who names the species confidently.
• Less common availability than Lasius niger, so do not treat it as a default first purchase.
• Dry-loving does not mean dry founding tube; the water reservoir still matters.