Ant keepers may choose to keep ants in captivity for the purpose of documenting ant behavior. This field of study is called Myrmecology. Ant keepers may also choose to keep ants as a casual hobby; i.e., as pets. People who keep ants may also keep them for scientific purposes and experiments.
Starting a colony
There are differing methods of starting, caring for, and housing an ant colony. A fertilized ant queen can be bought, provided that the seller is from your area and that you are buying a native species. If you are in the UK, or in any other European country, any species of ants can be kept legally and you can purchase these through EU based sellers.
Locating a queen ant
The first step involved in ant keeping is capturing a fertilized queen ant. Ants engage in nuptial flights during spring and summer, and after these flights a fertilized queen ant will land and remove her wings before locating a spot to found her new colony. If a queen has already chewed her wings off, she is likely fertilized. If a queen ant on the ground still has her wings, she is likely unfertilized. A queen ant can be distinguished from a worker ant by the relatively larger size of the thorax, and the enlarged abdomen which contains eggs. Beware that certain species have large workers similar in size to a queen, if the possible queen you are looking at has marks on either side of the thorax it is a queen. If not, it's a supermajor; a larger worker of the colony.
Housing the queen ant
For fully claustral species, the queen should be sealed in a dark, aerated small container with access to water. One way to provide this environment involves using a test tube, some water, and two cotton balls. One cotton ball is pressed against the water, the queen is inserted, and the other cotton ball is used to plug the end of the tube. This nesting chamber should be kept in the dark for one month while the queen lays her eggs and tends to them until they hatch. A claustral ant species need not be fed during this period, as a queen ant will digest her now-useless wing muscles to provide her with the necessary energy until her first generation of workers emerges. But feeding a small drop of honey energises the queen ant and reduces the chances of her eating her own eggs. For a semi-claustral species, which will require food during this nesting phase, protein rich foods should be provided intermittently during the pre-worker phase, with the frequency and type of food determined by the specific species of ant.
Moving the ants into a larger housing
If successful with feeding the first generation of workers, the queen ant should continue laying eggs. Eventually, the colony should be moved into a larger housing such as a formicarium to allow continued growth of the colony. If you wish to put your ants into a setup before this 'worker limit', you may purchase a 'test tube outworld' which will allow them to be fed more easily, while still inside the test tube.
Caring for ants
Dietary needs
An ant's diet should consist primarily of sugars/carbohydrates and proteins. The sugars are necessary to provide the ants with energy, and the proteins are necessary for the growth of the colony. Uneaten food should be removed to prevent the growth of mold in the formicarium.
Environmental needs
Besides the obvious need of a formicarium and outworld, ants require certain conditions to thrive. For one, almost all ants, save for a few twig nesting species, will not survive without a source of humidity in their nest. This can be accomplished in many ways; some nests are made of a naturally absorbent material, such as plaster, some contain a sponge or cotton ball which is watered when need be, and others still contain a reservoir of water which evaporates over time. Most ants also appreciate a heat source; as ants are cold blooded, their colonies develop faster the warmer their nest is. A heating cable is the preferred method of many antkeepers, but heat lamps, heating pads, and un-air conditioned rooms are all worthy alternatives. Many antkeepers keep their ants in a dark area to avoid stressing them, though most species become desensitized to light after being exposed to it frequently. While light-aversion can be a useful tool when moving colonies to new habitats, the benefits of having ants both indifferent to observation and more easily monitored far outweighs this, especially when more effective alternatives, such as physical disturbance to or partial disassembly of the formicarium exist.
Laws on keeping ants
The legality of intentionally shipping reproductive ants across state, provincial, or international borders varies substantially by country. In the United States, it is illegal to ship live queen ants across state lines without a license or explicit permission from relevant state or federal entities. As of 2019, however, at least one species is legal to ship within the United States, with the exception of Alaska, California, Florida, and Hawaii. In Europe, some domestic species are protected, and it is illegal to own, keep, buy, or sell these ants, or to damage their nests. However, unlike for reptiles and spiders, there are no rules for owning, keeping, buying or selling non-protected species inside the EU and many other countries.
In popular culture
Over the years Ant Keeping has become more normalised through the internet. Ants Canada and Ants Australia are both some of the key influencers in Ant Keeping Culture. They have together helped society think of ant keeping as a normal hobby and not one to be afraid of.
