An Overview of the Species and Ecological Diversity of Ants


Since their appearance during the Cretaceous, ants have diversified to become today the most diverse group of social insects and one of the most influential groups of organisms on the planet. More than 12 500 species of ants are presently described, distributed within 21 subfamilies, with a large majority of the species belonging to only four subfamilies. Ants are present in almost all terrestrial ecosystems, their peak of diversity is found within the tropical regions, and ant richness tends to decline both with increasing latitude and altitude. In most ecosystems the ecological importance of ants, involved in numerous interactions with organisms ranging from bacteria, plants, fungi, arthropods to vertebrates, plays a critical role in the survival or control of many species. Finally, despite the tremendous efforts to understand ant biology over the past decades, the ecology of most species is still poorly understood and many new species are expected to be discovered.

Key Concepts:

  • Ants, Formicidae, appeared during the Cretaceous period.

  • Modern ants arise during the Eocene period and then became an important part of insect communities.

  • More than 12 500 species of ants are known today, with many species still unknown, and most of the current species belong to four subfamilies: the Myrmicinae, Formicinae, Ponerinae and Dolichoderinae.

  • Like many other organisms, ants present a latitudinal gradient of species richness, with the highest richness found within the tropical regions.

  • Ant species richness tends to decrease with elevation, and become extremely scarce for an elevation above 2500 m, but can be present up to 4800 m.

  • Through herbivory, predation or mutualistic interactions, ants contribute to the regulation and survival of many organisms.

  • The modifications of the abiotic conditions within and around the nest ants occupy create favourable habitats for many organisms and as such ants can be perceived as ecosystem engineers.

  • Much work, especially in taxonomy, ecology and biogeography of ants is still needed to fully address questions related to large‐scale patterns and processes by which ants became and are still successful.

Keywords: ants; biogeography; Myrmicinae; Formicinae; Ponerinae; Dolichoderinae; predation; mutualism; ecosystem engineers

Figure 1.

Timeline of the origin of ants and its four main subfamilies.

Figure 2.

(a) Thaumatomyrmex species with specialised pitch‐forked mandibules allowing them to manipulate their hairy preys, the polyxenid millipedes, while ‘shaving’ them. (b) Worker of the fungus‐growing ant genus Apterostigma carrying a piece of mycelium within the nest. (c) Workers of a Neotropical species of Pheidole bringing back a prey item (here a Coleoptera) to their nest. Photographs by Benoit Guénard.

Figure 3.

Expected generic diversity as a function of latitude for political regions (modified after data in Guénard et al. ) for the New World (green circles) and the Old World, with a separation between the West Palaearctic and the Ethiopian regions (blue circles) and the East Palaearctic and Australasian regions (orange circles).

Figure 4.

(a) Leaf‐cutting ant of the genus Acromyrmex cutting a leaf. (b) Ant of the genus Rhytidoponera dispersing an Acacia seed in the arid region of Western Australia. Note the presence of the yellow lipid‐rich part, the elaiosome that is seized by the ant mandibules. (c) Ectatomma tuberculatum feeding on extrafloral nectaries, Rica. (d) Camponotus species feeding on the honeydew produced by an Hemipteran (Coccidae) in Costa. Photographs by Benoit Guénard.



Baroni Urbani C and de Andrade ML (1997) Pollen eating, storing, and spitting by ants. Naturwissenschaften 84: 256–258.

Bonansea MI and Vaira M (2007) Geographic variation of the diet of Melanophryniscus rubriventris (Anura: Bufonidae) in Northwestern Argentina. Journal of Herpetology 41(2): 231–236.

Brady SG, Schultz TR, Fisher BL and Ward PS (2006) Evaluating alternative hypotheses for the early evolution and diversification of ants. Proceedings of the National Academy of Sciences of the USA 103(48): 18172–18777.

Brandão CRF, Diniz JLM and Tomotake EM (1991) Thaumatomyrmex strips millipedes for prey: a novel predatory behaviour in ants, and the first case of sympatry in the genus (Hymenoptera: Formicidae). Insectes Sociaux 38: 335–344.

Bruhl CA, Mohamed M and Linsenmair KE (1998) Altitudinal distribution of leaf litter ants along a transect in primary forests on mount Kinabalu, Malaysia. Journal of Tropical Ecology 15(3): 265–277.

Carretero MA and Lo Cascio P (2010) What do myrmecophagous geckos eat when ants are not available? Comparative diets of three Socotran species. African Zoology 45(1): 115–120.

Czechowski W, Marko B, Eros K and Csata E (2011) Pollenivory in ants (Hymenoptera: Formicidae) seems to be much more common than it was thought. Annales Zoologici 61(3): 519–525.

Czechowski W, Marko B and Radchenko A (2008) Rubbish dumps reveal the diet of ant colonies: Myrmica schencki Em. and Myrmica rubra (L.) (Hymenoptera: Formicidae) as facultative pollen‐eaters. Polish Journal of Ecology 56(4): 737–741.

Czerwiński Z, Jakubczyk H and Petal J (1971) Influence of ant hills on the meadow soils. Pedobiologia 11: 277–285.

Dean WRJ and Yeaton RI (1993) The effects of harvester ant Messor capensis nest‐mounds on the physical and chemical properties of soils in the southern Karoo, South Africa. Journal of Arid Environment 25: 249–260.

Dejean A, Leroy C, Corbara B et al. (2010) Arboreal ants use the “Velcro Principle” to capture very large prey. PLoS ONE 5(6): e11331. doi:10.1371/journal.pone.0011331.

Dejean A, Solano PJ, Ayroles J, Corbara B and Orivel J (2005) Arboreal ants build traps to capture prey. Nature 434: 973.

Dlussky GM and Rasnitsyn AP (2002) Ants (Hymenoptera: Formicidae) of formation Green River and some other Middle Eocene deposits of North America. Russian Entomological Journal 11(4): 411–436.

Dlussky GM and Rasnitsyn AP (2009) Ants (Insecta: Vespida: Formicidae) in the upper Eocene amber of Central and Eastern Europe. Paleontological Journal 43(9): 1024–1042.

Dunn RR, Agosti D, Andersen AN et al. (2009) Climatic drivers of hemispheric asymmetry in global patterns of ant species richness. Ecology Letters 12: 324–333.

Engel MS, Grimaldi DA and Krishna K (2009) Termites (Isoptera): their phylogeny, classification, and rise to ecological dominance. American Museum Novitates 3650: 1–27.

Frederickson ME, Greene MJ and Gordon DM (2005) ‘Devil's gardens’ bedeviled by ants. Nature 437: 495–496.

Frouz J, Holec M and Kalčik J (2003) The effect of Lasius niger (Hymenoptera, Formicidae) ant nest on selected soil chemical properties. Pedobiologia 47(3): 205–212.

Frouz J and Jilková V (2008) The effect of ants on soil properties and processes (Hymenoptera: Formicidae). Myrmecological News 11: 191–199.

Grimaldi D and Agosti D (2000) A formicine in New Jersey Cretaceous amber (Hymenoptera: Formicidae) and early evolution of the ants. Proceedings of the National Academy of Sciences of the USA 97(25): 13678–13683.

Grobe C, Kaczensky P and Knauer F (2003) Ants: a food source sought by Slovenian brown bears (Ursus arctos)? Canadian Journal of Zoology 81: 1996–2005.

Guénard B, Weiser MD and Dunn RR (2012) Global models of ant diversity suggest regions where new discoveries are most likely are under disproportionate deforestation threat. Proceedings of the National Academy of Sciences of the USA 109(19): 7368–7373.

Haber WA, Frankie GW, Baker HG, Baker I and Koptur S (1981) Ants like flower nectar. Biotropica 13(3): 211–214.

Haitao W, Donghui W, Xianguo L and Xiaomin Y (2010) Spatial distribution of ant mounds and effects on soil physical properties in wetlands of the Sanjiang plain, China. Acta Ecologica Sinica 30: 270–275.

van der Hammen T and Ward PS (2005) Ants from the Ecoandes expeditions: diversity and distribution. Studies on Tropical Andean Ecosystems 6: 239–248.

Hartman GD, Whitaker JO Jr and Munsee JR (2000) Diet of the mole Scalopus aquaticus from the Coastal plain region of South Carolina. American Midland Naturalist 144: 342–351.

Holec M and Frouz J (2006) The effect of two ant species Lasius niger and Lasius flavus on soils properties in two contrasting habitats. European Journal of Soil Biology 42: 213–217.

Hölldobler B and Wilson EO (1990) The Ants. Cambridge, MA: Harvard University Press. 732 pp.

Horstmann K (1974) Untersuchungen über den nahrungserwerb der waldameisen (Formica polyctena Foerster) im eichenwald. III. Jahresbilanz. Oecologia 15: 187–204.

Huang HT and Yang P (1987) The ancient cultured citrus ant. BioScience 37: 665–671.

Johnson RA (2001) Biogeography and community structure of North American seed‐harvester ants. Annual Review of Entomology 46: 1–29.

Koptur S (1992) Extrafloral nectary‐mediated interactions between insects and plants. In: Bernays E (ed.) Insect–Plant Interactions, pp. 81–129. Boca Raton, Florida: CRC Press.

Kronauer DJC (2008) Recent advances in army ant biology (Hymenoptera: Formicidae). Myrmecological News 12: 51–65.

Lachaud JP, Valenzuela J, Corbara B and Dejean A (1990) La prédation chez Ectatomma ruidum: étude de quelques paramètres environnementaux. Actes des Colloques Insectes Sociaux 6: 151–155.

Lafleur B, Bradley RL and Francoeur A (2002) Soil modifications created by ants along a post‐fire chronosequence in lichen‐spruce woodland. Ecoscience 9(1): 63–73.

Lal R (1988) Effect of macrofauna on soil properties in tropical ecosystems. Agriculture, Ecosystems and Environments 24: 101–116.

LaPolla JS, Dlussky GM and Perrichot V (2013) Ants and the fossil record. Annual Review of Entomology 58: 609–630.

Lengyel S, Gove AD, Latimer AM, Majer JD and Dunn RR (2009) Ants sow the seeds of global diversification in flowering plants. PLoS ONE 4(5): e5480. eoi:10.1371/journal.pone.0005480.

Longino JTL and Nadkarni NM (1990) A comparison of ground and canopy leaf litter ants (Hymenoptera: Formicidae) in a neotropical montane forest. Psyche 97: 81–93.

Machac A, Janda M, Dunn RR and Sanders NJ (2011) Elevational gradients in phylogenetic structure of ant communities reveal the interplay of biotic and abiotic constraints on diversity. Ecography 34: 364–371.

Malsch AKF, Fiala B, Maschwitz U et al. (2008) An analysis of declining ant species richness with increasing elevation at Mount Kinabalu, Sabah, Borneo. Asian Myrmecology 2: 33–49.

Mehdiabadi NJ and Schultz TR (2010) Natural history and phylogeny of the fungus‐farming ants (Hymenoptera: Formicidae: Myrmicinae: Attini). Myrmecological News 13: 37–55.

Moreau CS, Bell CD, Vila R, Archibald SB and Pierce NE (2006) Phylogeny of the ants: diversification in the age of angiosperms. Science 312: 101–103.

Peeters C (1997) Morphologically ‘primitive’ ants: comparative review of social characters, and the importance of queen–worker dimorphism: In: Choe JC and Crespi BJ (eds) The Evolution of Social Behavior in Insects and Arachnids, pp. 372–391. Cambridge: Cambridge University Press.

Pekar S (2004) Predatory behavior of two European ant‐eating spiders (Araneae, Zodariidae). Journal of Arachnology 32: 31–41.

Perkovsky EE (2009) Differences in ant (Hymenoptera, Formicidae) species composition between weight fractions of Rovno amber. Paleontological Journal 43(9): 1087–1091.

Petal J (1978) The role of ants in ecosystems. In: Brian MV (eds) Production Ecology of Ants and Termites, pp. 293–325. Cambridge: Cambridge University Press.

Raley CM and Aubry KB (2006) Foraging ecology of pileated woodpeckers in coastal forests of Washington. Journal of Wildlife Management 70(5): 1266–1275.

Sanders NJ (2002) Elevational gradients in ant species richness: area, geometry, and Rapoport's rule. Ecography 25(1): 25–32.

Ward PS, Brady SG, Fisher BL and Schultz TR (2010) Phylogeny and biogeography of Dolichoderine ants: effects of data partitioning and relict taxa on historical inference. Systematic Biology 59(3): 342–362.

Way MJ and Koo KC (1992) Role of ants in pest management. Annual Review of Entomology 37: 479–503.

Weber NA (1943) The ants of the Imatong Mountains, Anglo‐Egyptian Sudan. Bulletin of the Museum of Comparative Zoology 93: 263–389.

Weber NA (1966) Fungus growing ants. Science 153: 587–604.

Wilson EO (1958) Studies on the ant fauna of Melanesia. I. The tribe Leptogenyini. II. The tribes Amblyoponini and Platythyreini. Bulletin of the Museum of Comparative Zoology 118: 101–153.

Further Reading

Brown WL Jr (1973) A comparison of the Hylean and Congo‐West African rain forest ant faunas. In: Meggers BJ, Ayensu ES and Duckworth WD (eds) Tropical Forest Ecosystems in Africa and South America: A Comparative Review, viii+350, pp. 161–185. Washington, DC: Smithsonian Institution Press.

Del Toro I, Ribbons RR and Pelini SL (2012) The little things that run the world revisited: a review of ant‐mediated ecosystem services and disservices (Hymenoptera: Formicidae). Myrmecological News 17: 133–146.

Folgarait PJ (1998) Ant biodiversity and its relationship to ecosystem functioning: a review. Biodiversity and Conservation 7: 1221–1244.

Hölldobler B and Wilson EO (2009) The Superorganism. New York, USA: W. W. Norton & Company Ltd. 522 pp.

Jones CG, Lawton JH and Shachak M (1994) Organisms as ecosystem engineers. Oikos 69: 373–386.

Lach L, Parr CL and Abbott KL (2009) Ant Ecology. New York, USA: Oxford University Press. 402 pp.

Passera L and Aron S (2005) Les Fourmis: Comportement, Organisation Sociale Et Évolution. Ottawa, Canada: les Presses scientifiques du CNRC. 480 pp.

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Guénard, Benoit(May 2013) An Overview of the Species and Ecological Diversity of Ants. In: eLS. John Wiley & Sons Ltd, Chichester. [doi: 10.1002/9780470015902.a0023598]