Ant
Guides
Pheidole crassicornis
crassicornis-group Big-headed Ants
Pheidole crassicornis is a species of big-headed ant in the genus Pheidole, family Formicidae, first described by Emery in 1895. The species belongs to the crassicornis complex within this diverse ant genus. Two subspecies are recognized: P. c. crassicornis (the nominate form) and P. c. tetra (described by Creighton in 1950). Like other Pheidole species, it exhibits the characteristic worker polymorphism with distinct major and minor worker castes.
Pheidole dentigula
Woodland Big-headed Ant
Pheidole dentigula is a species of big-headed ant in the genus Pheidole, first described by Smith in 1927. As with other members of this hyperdiverse genus, it exhibits a dimorphic worker caste system with minor workers and major soldiers. The species is native to North America and has been documented in woodland habitats.
Pheidole gilvescens
Pheidole gilvescens is a species of big-headed ant described by Creighton and Gregg in 1955. As a member of the hyperdiverse genus Pheidole, it exhibits the characteristic worker dimorphism typical of the genus, with minor workers and major workers (soldiers) differing substantially in head size and morphology. The species name derives from Latin 'gilvescens', meaning becoming pale yellow or tawny, likely referring to coloration. Very little specific biological or ecological information has been published for this particular species.
Pheidole inquilina
Pheidole inquilina is a species of ant in the genus Pheidole, first described by Wheeler in 1903. It is endemic to the United States. The species belongs to the hyperdiverse genus Pheidole, which contains over 1,000 species globally and is characterized by pronounced worker polymorphism with distinct major and minor worker castes.
Pheidole metallescens
Metallic Big-headed Ant
Pheidole metallescens is a species of big-headed ant in the genus Pheidole, first described by Emery in 1895. The species exhibits the characteristic dimorphic worker caste system typical of the genus, with minor workers and major workers (soldiers) possessing disproportionately large heads. Two subspecies are recognized: P. m. metallescens and P. m. splendidula. The species belongs to the diverse myrmicine ant tribe Attini.
Pheidole morrisii
Morris' Big-headed Ant
Pheidole morrisii is a species of big-headed ant in the genus Pheidole, first described by Forel in 1886. Like other members of this hyperdiverse genus, it exhibits the characteristic dimorphic worker caste system with minor workers and major workers (soldiers) bearing disproportionately enlarged heads. The species belongs to the myrmicine subfamily and is part of the tribe Attini.
Pheidole pelor
Pheidole pelor is a species of big-headed ant in the genus Pheidole, described by E.O. Wilson in 2003. It belongs to one of the most diverse ant genera, with over 1,000 species in the New World alone. The species exhibits the characteristic worker polymorphism of the genus, with distinct major and minor worker castes. Information regarding its specific biology, distribution, and ecology remains limited in published literature.
Pheidole rhea
Pheidole rhea is a highly polymorphic ant species native to the southwestern United States and northwestern Mexico. The species exhibits an exceptional three-tiered worker caste system comprising minor workers, soldiers, and supersoldiers—an unusual degree of physical polymorphism within the genus. Colonies form large, aggressive societies that forage along conspicuous trunk trails to harvest seeds and insects. First described by Wheeler in 1908, this species has become a subject of interest for studying the relationship between morphological specialization and behavioral plasticity in social insects.
Pheidole sitiens
Pheidole sitiens is a species of big-headed ant described by E.O. Wilson in 2003. As a member of the hyperdiverse genus Pheidole, it exhibits the characteristic dimorphic worker caste system with minor workers and major workers (soldiers) bearing disproportionately large heads. The species is part of the Attini tribe within Myrmicinae, placing it among the fungus-growing ants, though specific details about its biology remain poorly documented.
Pheidole tysoni
Tyson's Big-headed Ant
Pheidole tysoni is a species of big-headed ant in the genus Pheidole, described by Auguste Forel in 1901. As a member of this hyperdiverse ant genus, it exhibits the characteristic worker polymorphism with distinct major and minor worker castes. The species is part of the myrmicine subfamily and is classified within the Attini tribe. Available information about its biology and ecology remains limited in the provided sources.
Pheidole virago
helmet beetle
Pheidole virago is a species of big-headed ant in the family Formicidae, described by Wheeler in 1915. The species is part of the hyperdiverse genus Pheidole, which is characterized by pronounced worker polymorphism with distinct soldier and minor worker castes. Information about this specific species is extremely limited in scientific literature.
Pheidole xerophila
Pheidole xerophila is a species of ant in the genus Pheidole, first described by Wheeler in 1908. As a member of this hyperdiverse genus, it exhibits worker caste dimorphism with distinct minor and major worker morphs. The specific epithet 'xerophila' suggests an association with dry or arid environments. The species is documented in the Catalogue of Life and GBIF as accepted, with observations recorded on iNaturalist.
Platythyrea punctata
Common Silvery Hunter Ant
Platythyrea punctata is a neotropical ant species distinguished by its remarkable reproductive flexibility. Most populations reproduce through thelytokous parthenogenesis, where unmated workers produce female offspring from unfertilized eggs, resulting in colonies with clonal genetic structure. The species also exhibits facultative sexual reproduction, with occasional queens, gamergates (mated reproductive workers), and males appearing in some populations. This combination of alternative reproductive tactics is unique among ants and has made the species a model for studying social evolution, division of labor, and the transition between sexual and asexual reproduction.
Pogonomyrmex tenuispinus
Pogonomyrmex tenuispinus is a species of harvester ant in the genus Pogonomyrmex. Like other members of this genus, it is a seed-collecting ant native to arid regions. The species was described by Auguste Forel in 1914. As a harvester ant, it likely participates in seed dispersal and ecosystem engineering through nest construction, though specific ecological studies for this species are limited.
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orlived-by-factorexisted-by-factorbeen-by-factoroccurred-to-factorhappened-to-factortaken-place-with-factortranspired-with-factorresulted-from-factorensued-from-factorfollowed-from-factorsucceeded-to-factorpreceded-by-factoranteceded-by-factorled-to-by-factorcaused-by-factorproduced-by-factoreffected-by-factorbrought-about-by-factorgiven-rise-to-by-factorstemmed-from-factorarisen-from-factorderived-from-factororiginated-from-factorcome-from-factoremerged-from-factorsprung-from-factorflowed-from-factoraccorded-to-factordepended-on-by-factorrelied-on-by-factorrested-on-by-factorbased-on-by-factorgrounded-on-by-factorfounded-on-by-factorbuilt-on-by-factorconstructed-on-by-factorerected-on-by-factorestablished-on-by-factorset-up-on-by-factorinstalled-on-by-factorplaced-on-by-factorput-on-by-factorlaid-on-by-factorsettled-on-by-factorlocated-on-by-factorsituated-on-by-factorpositioned-on-by-factorstationed-on-by-factorposted-on-by-factorassigned-to-by-factorallotted-to-by-factorapportioned-to-by-factordistributed-to-by-factorgiven-to-by-factorgranted-to-by-factorawarded-to-by-factorconferred-on-by-factorbestowed-on-by-factorpresented-to-by-factoroffered-to-by-factorproposed-to-by-factorsuggested-to-by-factorrecommended-to-by-factoradvised-to-by-factorcounseled-to-by-factorconsulted-with-by-factorconferred-with-by-factordiscussed-with-by-factortalked-with-by-factorspoken-with-by-factorsaid-to-by-factortold-to-by-factorinformed-of-by-factornotified-of-by-factorreported-to-by-factorannounced-to-by-factorproclaimed-to-by-factorpublished-to-by-factorissued-to-by-factorreleased-to-by-factorcirculated-to-by-factorbroadcast-to-by-factortransmitted-to-by-factorsent-to-by-factordispatched-to-by-factorposted-to-by-factormailed-to-by-factorshipped-to-by-factortransported-to-by-factorconveyed-to-by-factordelivered-to-by-factorreceived-at-factoraccepted-at-factortaken-at-factorgotten-at-factorobtained-at-factoracquired-at-factorgained-at-factorearned-at-factorwon-at-factorachieved-at-factorattained-at-factorreached-at-factorarrived-at-factorcome-at-factorapproached-at-factorneared-at-factorclosed-at-factorended-at-factorfinished-at-factorcompleted-at-factorconcluded-at-factorterminated-at-factorstopped-at-factorceased-at-factorhalted-at-factorpaused-at-factorwaited-at-factorstayed-at-factorremained-at-factorcontinued-at-factorpersisted-at-factorlasted-at-factorendured-at-factorsurvived-at-factorlived-at-factorexisted-at-factorbeen-at-factoroccurred-at-factorhappened-at-factortaken-place-at-factortranspired-at-factorresulted-at-factorensued-at-factorfollowed-at-factorsucceeded-at-factorpreceded-at-factoranteceded-at-factorled-to-at-factorcaused-at-factorproduced-at-factoreffected-at-factorbrought-about-at-factorgiven-rise-to-at-factorstemmed-at-factorarisen-at-factorderived-at-factororiginated-at-factoremerged-at-factorsprung-at-factorflowed-at-factoraccorded-at-factordepended-at-factorrelied-at-factorrested-at-factorbased-at-factorgrounded-at-factorfounded-at-factorbuilt-at-factorconstructed-at-factorerected-at-factorestablished-at-factorset-up-at-factorinstalled-at-factorplaced-at-factorput-at-factorlaid-at-factorsettled-at-factorlocated-at-factorsituated-at-factorpositioned-at-factorstationed-at-factorposted-at-factorassigned-at-factorallotted-at-factorapportioned-at-factordistributed-at-factorgiven-at-factorgranted-at-factorawarded-at-factorconferred-at-factorbestowed-at-factorpresented-at-factoroffered-at-factorproposed-at-factorsuggested-at-factorrecommended-at-factoradvised-at-factorcounseled-at-factorconsulted-at-factordiscussed-at-factortalked-at-factorspoken-at-factorsaid-at-factortold-at-factorinformed-at-factornotified-at-factorreported-at-factorannounced-at-factorproclaimed-at-factorpublished-at-factorissued-at-factorreleased-at-factorcirculated-at-factorbroadcast-at-factortransmitted-at-factorsent-at-factordispatched-at-factormailed-at-factorshipped-at-factortransported-at-factorconveyed-at-factordelivered-at-factorPolistes dominula
European Paper Wasp
Polistes dominula is a highly successful invasive social wasp native to Eurasia that has established populations across North America, South America, New Zealand, South Africa, and other regions. First detected in North America near Boston in 1978, it has become one of the most abundant wasps on the continent. The species builds small, exposed paper nests in protected locations and preys primarily on live insects, particularly caterpillars. Unlike yellowjackets, it does not scavenge for meat or sugar. Its rapid spread has been attributed to ecological flexibility, superior competitive ability, and tolerance of human-altered environments.
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pennsylvanica
Common Porthole Ant
Ponera pennsylvanica is a small ant species inhabiting mesic forests of the Eastern United States. Colonies are notably small, typically containing fewer than 100 workers. Nests occur in diverse microhabitats including decaying wood, soil, acorns, and leaf litter. The species belongs to the ponerine ant subfamily, characterized by relatively primitive social organization compared to more derived ant groups.
Proceratium chickasaw
Proceratium chickasaw is a species of ant in the subfamily Proceratiinae, described by de Andrade in 2003. Members of this genus are small, cryptic ants known for specialized predatory behaviors. The species name refers to the Chickasaw people, indigenous to the southeastern United States. Like other Proceratium species, it likely exhibits specialized egg predation behaviors, though direct observations of this species remain limited.
Proceratium crassicorne
Fat Curltail Ant
Proceratium crassicorne is a rarely encountered ant species described by Emery in 1895. It belongs to the genus Proceratium, a group of specialized predatory ants known for their distinctive elongated petiole and furtive foraging habits. The species epithet 'crassicorne' refers to its notably thick antennae. Like other members of its genus, it is likely a cryptic predator with specific habitat requirements, though detailed biological studies remain limited.
Proceratium pergandei
Pergandei-clade Hairy Curltail Ants
Proceratium pergandei is a species of ant in the subfamily Proceratiinae, endemic to the Central and Eastern United States. It belongs to a genus of small, cryptic ants commonly known as 'curltail ants' for their distinctive abdominal morphology. Members of the Pergandei-clade within Proceratium are characterized by dense pilosity (hairiness) compared to other congeners.
Proceratium silaceum
Silaceum-clade Hairy Curltail Ant
Proceratium silaceum is a rare ant species first described by Roger in 1863. It belongs to the Proceratiinae subfamily, a group characterized by cryptobiotic lifestyles that make them infrequently collected. The species has been recorded in South America, with distribution data documented in Brazil. It is part of the P. micrommatum clade within the genus Proceratium.
Pseudomyrmex apache
Apache Twig Ant
Pseudomyrmex apache is a species of twig ant in the subfamily Pseudomyrmecinae. It is native to the southwestern United States and Mexico, with unconfirmed reports from Florida. The species is characterized by its golden yellow coloration and wasp-like body form typical of the genus. Like other Pseudomyrmex species, it has notably large compound eyes relative to body size.
Pseudomyrmex pallidus
Pallidus-group Twig Ants
Pseudomyrmex pallidus is a small, slender ant species native to the Nearctic and Neotropical realms, with an extensive range from the southern United States through Central America and into South America. Workers are monomorphic and exhibit variable coloration from yellow to orange or brown. The species nests exclusively in hollow stems of dead grasses and woody twigs, typically at the interface of grassy and wooded habitats. Colonies are facultatively polygynous and polydomous, containing 1–15 queens and 20–200 workers.
Pseudoponera stigma
Pantropical Wolf Ant
A pantropical ant species in the subfamily Ponerinae, commonly known as the Pantropical Wolf Ant. The species has been documented across tropical regions including South America and parts of the United States, with 42 iNaturalist observations supporting its broad distribution. It belongs to a genus of ground-dwelling ants characterized by solitary foraging behavior and predatory habits.
Solenopsis pergandei
Pergande's Thief Ant
Solenopsis pergandei is a small thief ant species in the genus Solenopsis, described by Forel in 1901. It is native to North America and belongs to a genus that includes both native species and the highly invasive red imported fire ant (Solenopsis invicta). Unlike its notorious congener, S. pergandei is not considered a significant pest species. The species is part of a diverse group of Solenopsis ants commonly known as thief ants due to their habit of nesting near other ant colonies and stealing their brood.
Solenopsis picta
Northern Twig-nesting Thief Ant
Solenopsis picta is a species of thief ant in the genus Solenopsis, described by Emery in 1895. It is commonly known as the Northern Twig-nesting Thief Ant. The species belongs to a genus that includes other well-known ants such as the red imported fire ant (Solenopsis invicta), though S. picta is distinct in its ecology and behavior. Information specific to this species is limited in the provided sources.
Solenopsis tennesseensis
Tennessee Thief Ant
Solenopsis tennesseensis is a small ant species in the family Formicidae, described by Smith in 1951. Commonly known as the Tennessee Thief Ant, this species reaches approximately 1 mm in length and exhibits a yellow-brown coloration. It is native to North America, with documented occurrences in Mexico and the United States. The species belongs to the genus Solenopsis, which includes other well-known thief ants and fire ants.
Solenopsis texana
thief ant, Texas thief ant
Solenopsis texana is a species of thief ant in the family Formicidae, described by Emery in 1895. The species is native to Texas and surrounding regions. Two subspecies are recognized: S. t. texana and S. t. catalinae. Like other members of the genus Solenopsis, this species is small and inconspicuous, earning the common name "thief ant" due to its habit of nesting near other ant colonies and stealing resources.
Stenamma chiricahua
Stenamma chiricahua is a species of ant in the family Formicidae, first described by Snelling in 1973. The species epithet refers to the Chiricahua Mountains of southeastern Arizona, indicating its type locality and geographic association with this Madrean Sky Island range. As a member of the genus Stenamma, it belongs to a cryptic ant group known for occurring in cool, wet forest habitats at mid to high elevations. The Middle American clade of Stenamma, which includes this species, underwent a major taxonomic revision in 2013 that recognized 40 species, 33 of which were newly described, revealing a previously overlooked radiation of Neotropical ants.
Stenamma impar
Stenamma impar is a species of ant in the genus Stenamma, family Formicidae. The genus Stenamma comprises cryptic "leaf-litter" ants found in moderately humid to wet forest habitats across the Holarctic region, Central America, and parts of northwestern South America. Species in this genus are generally small, slow-moving, and form small colonies. Many Stenamma species are adapted to cool, wet environments at mid to high elevations, where they can be the most common ant genus in leaf-litter samples from cloud forest localities.
Stenamma meridionale
Stenamma meridionale is a species of ant in the genus Stenamma, family Formicidae, described by Smith in 1957. The genus Stenamma comprises cryptic 'leaf-litter' ants found in moderately humid to wet forest habitats across the Holarctic region, Central America, and parts of northwestern South America. Species in this genus are typically small, slow-moving, and form small colonies. Many Stenamma species are adapted to cool, wet environments at mid to high elevations, often becoming the most abundant ant genus in cloud forest leaf-litter samples.
Stigmatomma pallipes
vampire ant, Eastern Dracula Ant
Stigmatomma pallipes, commonly known as the vampire ant or Eastern Dracula Ant, is a species of ant in the subfamily Amblyoponinae native to North America. It is one of three Stigmatomma species found on the continent. This species is notable for its small colony size and cryptic lifestyle, making it difficult to encounter in the field. The species is a specialized predator, though specific prey details are not well documented.
Strumigenys ananeotes
Strumigenys ananeotes is a species of miniature trap-jaw ant described in 2019 from Costa Rica. It belongs to a diverse genus of predatory ants known for their elongated mandibles that snap shut to capture prey. The species name derives from Greek, meaning 'newly emerged' or 'returning to life', possibly referencing its discovery or cryptic habits. Like other members of its genus, it is likely a specialized predator of small soil arthropods.
Strumigenys chiricahua
Strumigenys chiricahua is a species of trap-jaw ant described by Ward in 1988. The specific epithet references the Chiricahua Mountains, a mountain range in southeastern Arizona known for high endemism and biodiversity. The species belongs to a large genus of miniature predatory ants characterized by specialized mandible morphology. Like other members of Strumigenys, it likely possesses elongated mandibles capable of rapid closure to capture prey.
Strumigenys mendezi
A species of miniature trap-jaw ant in the genus Strumigenys, described by Douglas Booher in 2021 from Ecuador. It belongs to the S. ayersthey species group, characterized by distinctive mandible morphology. Like other members of this diverse myrmicine genus, it is likely a cryptic soil-dwelling predator, though specific ecological details remain undocumented.
Strumigenys pilinasis
Hairy-snouted Mustache Ant
Strumigenys pilinasis is a species of trap-jaw ant in the family Formicidae, first described by Auguste Forel in 1901. The species is characterized by its distinctive pilose (hairy) snout, which gives rise to its common name. Like other members of the genus Strumigenys, it possesses elongated mandibles capable of rapid closure to capture prey. The species has been historically classified under the genus Pyramica, which is now treated as a synonym of Strumigenys. It belongs to a diverse genus containing over 850 described species, many of which remain poorly known.
Syscia augustae
Syscia augustae is a species of doryline ant originally described by Wheeler in 1902 as Cerapachys augustae. The species was transferred to the genus Syscia following taxonomic revision of the doryline ants. It belongs to the subfamily Dorylinae, a group known for army ant-like behaviors including group foraging and nomadic colony cycles. Very few observations of this species have been documented, with most records originating from Brazil.
Tapinoma litorale
Odorous Tropical Twig Ant
Tapinoma litorale is a small ant species in the genus Tapinoma, described by William Morton Wheeler in 1905. It is native to various countries in North America, with records from the conterminous United States and San Andrés. The species is commonly known as the Odorous Tropical Twig Ant, suggesting a preference for arboreal or twig-nesting habitats in tropical or subtropical regions.
Temnothorax ambiguus
Doubtful Acorn Ant
Temnothorax ambiguus is an ant species in the subfamily Myrmicinae, commonly known as the Doubtful Acorn Ant. It serves as a host species for the obligatory slave-making ant Protomognathus americanus and exhibits facultative slave-making behavior itself. Laboratory studies demonstrate sophisticated larval recognition capabilities, with workers preferentially accepting nestmate larvae and discriminating between conspecific and allospecific brood. The species has been observed in contexts involving cavity-nesting habits typical of the genus, including nesting in hollow nuts and acorns.
Temnothorax caguatan
Temnothorax caguatan is a species of small myrmicine ant described in 2014 from California, USA. It belongs to a genus of cavity-nesting ants known for nesting in pre-existing cavities such as hollow acorns, twigs, and rock crevices. The species was one of ten new Temnothorax species described from California in a single study, effectively doubling the known species diversity of this genus in the state. Like other members of Temnothorax, it is likely a generalist scavenger with colonies of moderate size.
Temnothorax obliquicanthus
Temnothorax obliquicanthus is a species of ant in the subfamily Myrmicinae, originally described by Cole in 1953. As a member of the genus Temnothorax, it belongs to a diverse group of small ants commonly known as acorn ants or rock ants due to their frequent nesting habits. The genus contains over 350 species worldwide, with approximately 60 species documented from North America. Like other Temnothorax species, T. obliquicanthus is likely a cavity-nesting ant that utilizes pre-existing small spaces such as hollow acorns, twigs, or rock crevices for colony establishment.
Temnothorax quasimodo
Temnothorax quasimodo is a species of ant in the genus Temnothorax, family Formicidae, described in 2014 from California, USA. It was one of ten new Temnothorax species described in a study that doubled the number of species in this genus known from California. The species epithet references the hunchbacked appearance of the type specimen's petiole and postpetiole. Like other Temnothorax species, it is a small cavity-nesting ant that inhabits acorns, twigs, and other pre-existing plant cavities.
Temnothorax whitfordi
Temnothorax whitfordi is a species of ant in the genus Temnothorax, family Formicidae. The species was described by Mackay in 2000 and is accepted as valid in taxonomic databases. Very little specific information about this species' biology, distribution, or ecology has been published in the provided sources. The genus Temnothorax comprises over 350 species worldwide, with approximately 60 species known from North America. Members of this genus are typically small ants that nest in pre-existing cavities such as hollow twigs, acorns, or rock crevices.
Tetramorium hispidum
Tetramorium hispidum is a species of ant in the subfamily Myrmicinae, first described by Wheeler in 1915. It is distinguished from similar ants by the structure surrounding its antennal insertions. The species possesses short, stubble-like hairs on the pronotum and frontal carinae, and has 11-segmented antennae. As a member of the genus Tetramorium, it belongs to a diverse group of ants commonly known as pavement ants.
Tetramorium lanuginosum
Downy Pennant Ant
Tetramorium lanuginosum is a species of ant in the family Formicidae, first described by Mayr in 1870. The species is distributed across the Caribbean region and the Galápagos Islands, with confirmed presence in Antigua and Barbuda, Barbados, Cuba, and Spain (likely referring to the Canary Islands). It belongs to the genus Tetramorium, a diverse group of myrmicine ants commonly known as pavement ants or pennant ants. The common name "Downy Pennant Ant" refers to the species' characteristic appearance.
Trachymyrmex nogalensis
Trachymyrmex nogalensis is a fungus-gardening ant species from southern Arizona, described by Byars in 1951. As a member of the attine tribe, it cultivates fungal gardens as its primary food source. The queen caste was first characterized in a 2007 taxonomic revision, having previously been undescribed. The species is one of nine North American Trachymyrmex species recognized in that revision.
Xenomyrmex floridanus
Florida Flattened Tree Ant
Xenomyrmex floridanus is a species of ant in the subfamily Myrmicinae, known from Florida, the Caribbean, and parts of Mexico and Central America. The species belongs to a small genus of arboreal ants sometimes referred to as flattened tree ants. Two subspecies are recognized: X. f. floridanus and X. f. skwarrae.