The Probert Encyclopaedia of Nature

ANT

Ant is the popular name for hymenopterous (or membranous-winged) insects of various genera of the super-family Formicoidea. Ants are found in most temperate and tropical regions. They are small but powerful insects, and have long been noted for their remarkable intelligence and interesting habits. They live in communities regulated by definite laws, each member of the society bearing a well-defined and separate part in the work of the colony. Each community consists of males; of females much larger than the males; and of barren females, otherwise called neuters, workers, or nurses. The neuters are wingless, and the males and females only acquire wings for their Nuptial flight, after which the males perish, and the few females which escape the pursuit of their numerous enemies divest themselves of their wings, and either return to established nests, or become the foundresses of new colonies. The neuters perform all the labours of the ant-hill or abode of the community; they excavate the galleries, procure food, and feed the larvae or young ants, which are destitute of organs of motion. In fine weather they carefully convey them to the surface for the benefit of the sun's heat, and as attentively carry them to a place of safety either when bad weather is threatened or the ant-hill is disturbed. In like manner they watch over the safety of the nymphs or pupae about to acquire their perfect growth. Some communities possess a special type of neuters, known as 'soldiers,' from the duties that specially fall upon them, and from their powerful biting jaws.

There is a very considerable variety in the materials, size, and form of ant-hills, or nests, according to the peculiar nature or instinct of the species. Most of the British ants form nests in woods, fields, or gardens, their abodes being generally in the form of small mounds rising above the surface of the ground and containing numerous galleries and apartments. Some excavate nests in old tree-trunks. One little yellow ant (Myrmica domestica) is common in houses in Britain in some localities. Some ants live on animal food, very quickly picking quite clean the skeleton of any dead animal they may light on. Others live on saccharine matter, being very fond of the sweet substance, called honey-dew, which exudes from the bodies of Aphides, or plant-lice. These they sometimes keep in their nests, and sometimes tend on the plants where they feed; sometimes they even superintend their breeding. By stroking the aphides with their antennae they cause them to emit the sweet fluid, which the ants then greedily sip up. Various other insects are looked after by ants in a similar manner, or are found in their nests. It has been observed that some species, like the European Red Ant (Formica sanguinea), resort to violence to obtain working ants of other species for their own use, plundering the nests of suitable kinds of their larvae and pupae,which they carry off to their own nests to be carefully reared and kept as slaves. Amazon Ants (Polyergus rufescens) often keep between three and five times as many slaves as their own inhabitants in a nest.

In temperate countries male and female ants survive, at most, until autumn, or to the commencement of cool weather, though a very large proportion of them cease to exist long previous to that time. The neuters pass the winter in a state of torpor, and of course require no food. The only time when they require food is during the season of activity, when they have a vast number of young to feed. Some ants of southern Europe feed on grain, and store it up in their nests for use when required. Some species have stings as weapons, others only their powerful mandibles, or an acrid and pungent fluid (formic acid) which they can emit. The name ant is also given to the neuropterous insects otherwise called Termites.

In the 1990's a new species of ant, in appearance the same as any common garden ant, was discovered in Budapest and in 2009 the same species was found in Britain, which has a suicidal attraction to electrical fields - an attraction which overides even the desire to eat. Like American fire-ants, these ants are drawn in vast quantities to electrical switches where they die and can cause failure of the electrical system due to the numbers of ants involved, typically hundreds of thousands. In Texas, fire-ants are a major cause of traffic light failures, being drawn to the switch boxes where they die and short out the circuits.
Research Ant