Liometopum apiculatum ants are found in arid and semi-arid regions of southwestern United States and Mexico to Quintana Roo.

[3][4] Liometopum apiculatum ants are found in arid and semi-arid regions of southwestern United States and Mexico to Quintana Roo.

They fill hollowed-out chambers with a branched network of carton-like material made out of agglomerated soil and oral secretions until the entire nest resembles Swiss cheese.

They have also been collected in glass containers and rubber tires[6] and among the roots of various perennial xerophytes such as Agave spp., Opuntia spp., Myrtillocactus geometrizans, Yucca filifera, Senecio praecox, Schinus molle or Prosopis juliflora.

[7] Liometopum apiculatum are opportunistic carnivores and granivores, and have also been observed foraging on dead insects, larger colonies being more predaceous.

L. apiculatum also feeds on crustaceans, annelids, mollusks, dead vertebrates, animal droppings, and extrafloral nectar.

Workers have been attracted to various foods used as baits including apple sauce, sausage, vegetable soup, sugar water, and cookies.

L. apiculatum have also been observed soliciting honeydew from insects including membracids (Vanduzea segmentata), aphids, and other ants (Pogonomyrmex barbatus, Camponotus sayi and Solenopsis xyloni).

In some habitats the honeydew produced by hemipterans, Cinara spp., Dysmicoccus brevipes and Saissetia oleae, are the main energy sources.

There also appears to be little difference in the speed whether ants are moving towards or away from the nest, or between large and small workers during the summer months.

The spatial distribution of the foraging areas for these species seems to be strongly correlated with the location of shrubs and trees infested by hemipterans.

[9] Immature stages of reproductives have been found in L. apiculatum nests from May to August, whereas the rest of the year the brood is of the worker caste.

The workers continue to excite the alates with bites until they begin to beat their wings, and subsequently initiate flight one by one, not as a swarm.

Oviposition by founding queens is large, however, only a small percentage reaches the adult stage of the F1 generation, partly because the smaller, "trophic" eggs are consumed as food.

Ant queens were placed either in glass tubes with moist cotton or in jars with soil, and were held at varying temperatures and relative humidity.