Ant new estimates suggest that nearly 9% of all plant species may have such ant associations. Some plants in fire-prone grassland systems are particularly dependent on ants for their survival and dispersal as the seeds are transported to safety below the ground. Many ant-dispersed seeds have special external structures, elaiosomes, that are sought after by ants as food. A convergence, possibly a form of mimicry, is seen in the eggs of stick insects. They have an edible elaiosome-like structure and are taken into the ant nest where the young hatch. Most ants are predatory and some prey on and obtain food
Little black ant Workers may forage in households, but nest in soil mounds. It also tends aphids such as the soybean aphid ("Aphis glycines"), harvesting honeydew. During mid-summer the queens and males perform the nuptial flight, mating in midair. The males die shortly after. Each queen constructs a new nest, sheds its wings, and lays eggs. The development from egg to adult takes about a month. In a laboratory setting queens were found to live about one year and workers about four months. Little black ant The little black ant ("Monomorium minimum") is a species of ant native to North America. It is