Polygyny
Guides
Camponotus planatus
compact carpenter ant, short carpenter ant
Camponotus planatus is a Neotropical carpenter ant species characterized by polygynous colony structure—one of only three Camponotus species known to maintain multiple queens per colony. The species exhibits a distinctive compact body form and has been documented as an invasive species spreading in Florida and Texas. Workers display kin discrimination based on matrilineal relatedness, with division of labor organized along queen lineages within colonies. The species serves as a model for Batesian and Wassmanian mimicry by multiple arthropod species, and has been observed tending the endangered Miami blue butterfly caterpillar in Florida.
Cerapachyini
Cerapachyini is a tribe of ants within the subfamily Dorylinae, historically classified under Ponerinae. Members of this tribe are specialized predators known for raiding behavior. Some genera, such as Sphinctomyrmex, exhibit functional polygyny with multiple egg-laying queens coexisting without conflict, and display brood periodicity with synchronized brood development cycles. The tribe has undergone taxonomic revision, with current classification placing it within Dorylinae rather than Ponerinae.
Cyphomyrmex
fungus-growing ants
Cyphomyrmex is a genus of small, drab-colored fungus-growing ants in the tribe Attini, found primarily in the Neotropics. These ants cultivate fungi in the tribe Leucocoprineae as their primary food source, with most species growing fungal nodules rather than full mycelial gardens. Colonies are typically monogynous and small, rarely exceeding 500 workers. The genus is divided into two species complexes: the strigatus complex (South America only) and the rimosus complex (southern North America to South America). Cyphomyrmex represents a basal lineage among attine ants and serves as sister group to Mycetophylax.
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Dolichoderus is a genus of ants comprising 181 valid species (131 extant, 50 extinct), representing the sole member of tribe Dolichoderini and type genus of subfamily Dolichoderinae. Workers are small (approximately 4 mm), possess a thick sculptured integument, and lack a functional sting. The genus exhibits remarkable ecological diversity: most species are generalist honeydew collectors that tend aphids and scale insects, while the D. cuspidatus group in Southeast Asia practices unique nomadic aphid farming with obligate mutualist mealybugs. The genus has an extensive fossil record in Baltic amber.
Exapion ulicis
Gorse Seed Weevil
Exapion ulicis is a small seed-feeding weevil specialized on gorse (Ulex europaeus). Adults are light gray with a prominent snout roughly half the body length. The species is native to western Europe and has been introduced to New Zealand, California, Hawaii, and other regions as a biological control agent targeting invasive gorse populations. Larval feeding destroys seeds within pods, reducing plant spread, while adult feeding on stems and spines causes minor damage.
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rational-extensive-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-retentive-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-setminimal-weakly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-strongly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-collectively-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-Nash-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setminimal-individually-rational-individually-rational-Pareto-optimal-individually-rational-Nash-stable-setLeptothorax acervorum
acorn ant
Leptothorax acervorum is a small myrmicine ant first described by Fabricius in 1793. It exhibits a Holarctic distribution spanning Europe, northern Asia, and North America. The species is notable for its facultatively polygynous social structure, where colonies may contain one or multiple queens. Workers display a distinctive two-toned coloration with darker head and metasoma contrasting with a lighter mesosoma. Body size increases with latitude following Bergmann's rule, with boreal populations producing workers approximately 10% larger than those from central Europe.
Leptothorax canadensis
Northern Thin Ant
Leptothorax canadensis is a small myrmicine ant native to eastern North America, where it is one of the most common ants in boreal coniferous forests. The species exhibits facultative polygyny, with colonies containing multiple fertile queens. It is also known as a slave-making ant, conducting organized raids on host colonies—particularly Leptothorax muscorum—to capture pupae that emerge as workers serving the slave-making colony. Genetic studies indicate a multicolonial population structure with moderate gene flow and no evidence of inbreeding.
Monomorium
Trailing, Pharaoh, and Timid Ants
Monomorium is a large and morphologically diverse genus of ants in the subfamily Myrmicinae, containing approximately 396 species as of 2013. The genus exhibits remarkable variation in worker size, eye development, and caste polymorphism, with species ranging from minute to relatively large. It includes several significant pest species, notably the pharaoh ant (M. pharaonis) and the flower ant (M. floricola), which have achieved global distribution through human commerce. The genus is considered taxonomically problematic, lacking distinct morphological synapomorphies and currently recognized as paraphyletic, with several subgroups recently elevated to separate genera based on molecular evidence.
Myrmecina
Mite-eating Ants
Myrmecina is a genus of ants in the subfamily Myrmicinae containing approximately 51-53 species. The genus has a broad geographic distribution spanning North America, Europe, northern Africa, India, Korea, Japan, and Australia. Species exhibit diverse reproductive strategies, including both winged gynomorphs and wingless intermorphs, with some populations demonstrating polygynous reproduction by ergatoid (worker-like) queens. The common name 'Mite-eating Ants' suggests a specialized dietary niche, though this has not been extensively documented.
Myrmecocystus mendax
honey ant, honeypot ant
Myrmecocystus mendax is a species of honeypot ant native to Mexico and the Southwestern United States. The species exhibits notable intraspecific variation in social organization: populations in the Sierra Ancha Mountains of central Arizona display primary polygyny with cooperative colony founding by multiple unrelated queens, while Chiricahua Mountains populations are predominantly monogynous with single-queen founding. Mature colonies in polygynous populations contain an average of 6.27 queens. The species produces specialized replete workers that serve as living food storage vessels.
Pogonomyrmex californicus
California harvester ant
Pogonomyrmex californicus is a seed-harvesting ant native to southwestern North America. It is the most widely distributed species in the genus Pogonomyrmex. The species exhibits a striking social polymorphism: most populations have single-queen colonies (monogyny), but some California populations show primary polygyny where multiple unrelated queens cooperate in colony founding and coexist in mature colonies. It possesses a powerful sting and has been used historically by Indigenous peoples for ritual and medicinal purposes. The species is a prominent model for studying the evolution of social behavior, cooperation, and epigenetic regulation of aggression.
Solenopsis molesta
thief ant, grease ant
Solenopsis molesta is a small myrmicine ant known for its habit of nesting near other ant colonies and stealing their food and brood, earning it the common name 'thief ant.' Workers are tiny (0.5–3 mm), yellow to pale brown, with reduced eyes and a two-segmented petiole. The species is native to the United States and northern Mexico, where it occupies diverse habitats from soil and rotting logs to human dwellings. Colonies range from a few hundred to a few thousand workers and may be polygynous. Nuptial flights occur from late July through early fall. The species is attracted to grease and protein sources rather than sweets, making it a distinctive household pest that is difficult to control due to its small size and inaccessible nesting sites.
Tapinoma
Tapinoma is a moderately diverse genus of ants in the subfamily Dolichoderinae, comprising approximately 87 described species (81 extant, 6 fossil) with a crown age estimated at 34–49 million years. Species occur worldwide in tropical and temperate regions, exhibiting generalized foraging behavior and flexible nesting habits. Several species, including T. sessile and T. melanocephalum, are notable as household pests and invasive species associated with human disturbance.
Tapinoma sessile
odorous house ant, sugar ant, stink ant, coconut ant
Tapinoma sessile is a small, highly adaptable ant native to North America that has become one of the most common household pests in the United States. The species exhibits remarkable plasticity in social structure: forest colonies are small, monogynous, and inhabit single nests, while urban colonies achieve massive supercolony status through extreme polygyny (multiple queens) and polydomy (multiple interconnected nests). Workers produce a distinctive odor when crushed, historically described as coconut-like but chemically confirmed to match blue cheese due to shared methyl ketones. The species spreads primarily through budding rather than independent colony founding, and shows high tolerance to many common insecticides, contributing to its persistence as a pest.
Tetramesa
Tetramesa is a genus of minute phytophagous wasps in the family Eurytomidae comprising over 200 described species. Members are exclusively associated with grasses (Poaceae), where they typically induce stem or inflorescence galls. The genus exhibits pronounced host specificity, with most species restricted to a single grass species or closely related congeners. Several species have been deployed as biological control agents against invasive grasses, including T. romana for giant reed (Arundo donax) and candidate agents for medusahead (Taeniatherum caput-medusae) and African lovegrass (Eragrostis curvula). Adults feed on nectar. Recent phylogenomic studies have synonymized the genera Aiolomorphus and Cathilaria within Tetramesa.
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squamosa
southern yellowjacket
Vespula squamosa, the southern yellowjacket, is a social wasp native to eastern North America, ranging from the Great Lakes to the Atlantic coast and south through Mexico to Guatemala. The species exhibits remarkable social plasticity: most colonies are annual and headed by a single queen, but in warmer climates colonies may become perennial, persisting multiple years and reaching extreme sizes with multiple reproductive queens (polygyny). Approximately 85% of colonies begin through facultative social parasitism, with V. squamosa queens usurping nests of V. maculifrons (eastern yellowjacket) or V. vidua (widow yellowjacket). Workers are approximately 13 mm long with black and yellow striping; queens are larger and more orange in coloration. The species is expanding its range northward and is now common in the Mid-Atlantic region.