It is the ant that is most often found on terraces and in flats. It nests in the ground and in tree stumps, under paving stones and floor slabs.
In the field, the worker searches for honeydew and flower nectar. Meat food in the form of insect parts is mainly used to feed the larvae.
They often infest rotten stored or used wood, but also nest in healthy beams, floorboards, and other wood and leave similar but less extensive feeding patterns than the horse or giant ant (Camponotus herculean). In addition, they also build their nests in materials such as cork or polystyrene of interior and exterior insulation layers.
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Information about the pre-stages is not given, as these are always found together with workers. Overall colouring very variable, black-brown to brown, breast and scales often lighter in workers, the front breast sometimes darker, legs and antennae more or less red-brown, in sexual animals light brown. Wings glassy, veins and pterostigma (wing front wall) light brownish yellow. Female workers 3-5 mm, males 3.5-4.2 mm, females 8-9 mm.
Main swarming period is from the end of July to the beginning of August, more rarely from May and into October. Often conspicuously large swarms of individuals. Certain specific climatic factors are obviously decisive for simultaneous swarming of colonies over a wide area. The mating takes place in the air, which the males respond to within a few days. The queen returns to the ancestral colony or finds another suitable place where she will stay until the next spring when she will start laying eggs. The larvae hatch after 22 to 28 days. The first larvae are fed with the secretion of the queen’s hypopharyngeal glands throughout the larval stage of 16 to 23 days. The first workers that hatch from the pupae then take over, among other tasks, brood care and feeding of the queen.
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