Mutillidae
Guides
Pseudomethoca sanbornii
Pseudomethoca sanbornii is a species of velvet ant in the family Mutillidae, a group of solitary wasps known for their aposematic coloration and powerful sting. Females are wingless and ant-like in appearance, while males possess wings. The species occurs across much of the eastern and central United States. Like other mutillids, females are reportedly capable of delivering a painful sting, though they are not aggressive and sting only in defense.
Pseudomethoca wickhami
Pseudomethoca wickhami is a species of velvet ant (family Mutillidae) distributed across the southeastern and south-central United States. Like other mutillids, females are wingless and males are winged. The species has been documented in 11 states from Virginia to Texas. As with all velvet ants, females possess a powerful sting and are known for their rapid, erratic movement patterns.
Sphaeropthalma amphion
Sphaeropthalma amphion is a species of velvet ant in the family Mutillidae, first described by Fox in 1899. Like other members of this genus, it is a parasitoid wasp with wingless females and winged males. The species is part of a diverse group of solitary wasps known for their aposematic coloration and painful stings. Very little specific information is available for this particular species.
Sphaeropthalma arota
velvet ant
Sphaeropthalma arota is a velvet ant (family Mutillidae) native to western North America. Phylogeographic studies indicate this name represents a cryptic species complex comprising four genetically distinct lineages that cannot be distinguished by current morphological methods. The species is adapted to arid environments, with diversification events linked to late Neogene mountain building and aridification in western North America. Like other mutillids, females are wingless and wasp-like in appearance, while males possess wings.
Sphaeropthalma auripilis
Sphaeropthalma auripilis is a species of velvet ant in the family Mutillidae, first described by Blake in 1871. Velvet ants are solitary wasps in which females are wingless and often brightly colored with aposematic coloration warning of their painful sting. The genus Sphaeropthalma is one of the larger genera within Mutillidae in North America. This species is part of a diverse group of parasitoid wasps that primarily attack other solitary wasps and bees.
Sphaeropthalma blakeii
Sphaeropthalma blakeii is a species of velvet ant in the family Mutillidae, first described by Fox in 1893. The genus Sphaeropthalma is among the most diverse mutillid genera in North America. Like all velvet ants, females are wingless and wasp-like in appearance, while males possess wings. The species is poorly documented in the literature, with limited information available beyond taxonomic records.
Sphaeropthalma boweri
Sphaeropthalma boweri is a species of velvet ant in the family Mutillidae. Like other members of this genus, it is likely a parasitoid of other wasps, particularly ground-nesting species. The genus Sphaeropthalma is part of a diverse group of velvet ants in North America, with multiple species documented in museum collections. Specific biological details for S. boweri remain poorly documented in published literature.
Sphaeropthalma coaequalis
Sphaeropthalma coaequalis is a species of velvet ant in the family Mutillidae, described by Cameron in 1896. Velvet ants are solitary wasps in which females are wingless and often brightly colored with dense, velvety pubescence. The species is part of a diverse genus containing numerous North American species. As with other mutillids, females are likely parasitoids of other ground-nesting insects, though specific host records for this species remain undocumented in the provided sources.
Sphaeropthalma difficilis
Sphaeropthalma difficilis is a species of velvet ant (family Mutillidae), a group of solitary wasps known for their aposematic coloration and powerful stings. Females are wingless and resemble ants, while males possess wings. The species was described by Baker in 1905. Like other mutillids, it is presumed to be a parasitoid of other insects, though specific host records for this species are not well documented.
Sphaeropthalma facilis
Sphaeropthalma facilis is a species of velvet ant in the family Mutillidae, first described by Cameron in 1896. Like other members of the genus Sphaeropthalma, this species is likely a parasitoid of other insects, though specific host records for this particular species are not well documented. The genus Sphaeropthalma contains multiple species distributed across North America.
Sphaeropthalma imperialis
Sphaeropthalma imperialis is a species of velvet ant (family Mutillidae), a group of solitary wasps known for their aposematic coloration and potent sting. Females are wingless and resemble large, hairy ants, while males possess wings. The species was described by Blake in 1871. Like other mutillids, this species exhibits sexual dimorphism and is parasitoid in its life history. The genus Sphaeropthalma is diverse and primarily distributed in the Americas.
Sphaeropthalma luiseno
Sphaeropthalma luiseno is a species of velvet ant in the family Mutillidae. Like other members of this genus, it is a wingless female wasp that parasitizes the nests of other wasps. The species is part of a diverse genus of velvet ants found primarily in western North America.
Sphaeropthalma megagnathos
Sphaeropthalma megagnathos is a species of velvet ant in the family Mutillidae, described by Schuster in 1958. Like other members of its genus, it is a wingless female wasp (males have wings) with a robust, ant-like appearance. The species is known from the southwestern United States, specifically Arizona, California, and Nevada. As with all velvet ants, females possess a powerful sting and are solitary parasitoids.
Sphaeropthalma mendica
velvet ant
Sphaeropthalma mendica is a desert-adapted velvet ant (family Mutillidae) native to western North America. It belongs to the S. unicolor species-complex, which includes both Mediterranean-adapted and desert-adapted species. Phylogeographic studies indicate that S. mendica diverged from its sister species S. unicolor during the early Pleistocene, with subsequent population structuring among desert populations. Like all velvet ants, females are wingless and possess a potent sting, while males are winged.
Sphaeropthalma orestes
Sphaeropthalma orestes is a species of velvet ant (family Mutillidae) described by Fox in 1899. The species is found in the western United States and Mexico. Like all velvet ants, it is a solitary wasp with wingless females and winged males. The species belongs to a genus characterized by compact, often brightly colored bodies with dense pubescence.
Sphaeropthalma pensylvanica
velvet ant
Sphaeropthalma pensylvanica is a velvet ant (family Mutillidae), a group of solitary wasps known for their striking aposematic coloration and painful sting. The species exhibits notable sexual dimorphism: females are wingless and resemble ants, while males possess wings. It has been documented as a parasitoid of mud dauber wasps, particularly developing within cocoons of the organ pipe mud dauber (Trypoxylon politum). Research has revealed unusual reproductive characteristics including facultative size-dependent sex allocation, where larger females produce proportionally more female offspring. The species is also notable for phoretic copulation, a mating behavior in which the male transports the female by flight or foot from the initial contact site before mating occurs.
Sphaeropthalma pensylvanica pensylvanica
velvet ant
A velvet ant subspecies in the family Mutillidae, notable for being the first record of phoretic copulation in the subfamily Sphaeropthalminae. Males transport females by flight and/or foot from the initial contact site before mating occurs. The species is a solitary parasitoid with unusual sex allocation patterns and has been reared from cocoons of the organ pipe mud dauber (Trypoxylon politum).
Sphaeropthalma pinalea
velvet ant
Sphaeropthalma pinalea is a species of velvet ant in the family Mutillidae, described by Schuster in 1958. Like other members of this genus, the females are wingless and ant-like in appearance, while males possess wings. The species is part of a diverse North American velvet ant fauna, with the genus Sphaeropthalma containing numerous species primarily distributed in western and southwestern United States.
Sphaeropthalma triangularis
Sphaeropthalma triangularis is a species of velvet ant in the family Mutillidae. Velvet ants are solitary wasps, with females being wingless and often ant-like in appearance. The species was described by Blake in 1871. Like other members of the genus Sphaeropthalma, this species is likely a parasitoid of other insects, though specific host records for S. triangularis remain undocumented. The genus Sphaeropthalma is known to include species that parasitize mud dauber wasps and other Hymenoptera.
Sphaeropthalma unicolor
Sphaeropthalma unicolor is a velvet ant species (family Mutillidae) native to Mediterranean regions of the Nearctic. It belongs to a species-complex that includes desert-adapted relatives, with phylogenetic studies indicating diversification driven by Pleistocene climatic fluctuations. The species shows little population-level genetic structuring across its range.
Sphaeropthalminae
Sphaeropthalminae is a species-rich subfamily of velvet ants (Mutillidae), a group of solitary wasps in which females are wingless and males are winged. Phoretic copulation—where a male physically transports a female by flight and/or foot from their initial site of contact before mating—has been documented in at least one member, Sphaeropthalma pensylvanica, representing the first record of this behavior for the subfamily. The subfamily exhibits sexual dimorphism, with flightless females and winged males.
Timulla barbata
Timulla barbata is a species of velvet ant in the family Mutillidae. Velvet ants are wingless female wasps known for their dense, velvety pubescence and potent sting. The genus Timulla is frequently cited as a model for mimicry by spiders in the genus Sergiolus, particularly S. capulatus. T. barbata inhabits sun-dappled patches in deciduous forest floors and similar open, dry habitats.
Timulla barbigera
velvet ant
Timulla barbigera is a species of velvet ant in the family Mutillidae. Velvet ants are actually wingless wasps, with females being entirely wingless and males possessing wings. The genus Timulla is frequently imitated by ground spiders in the genus Sergiolus, which share similar coloration and habitat preferences. These insects are known for their potent sting and are often encountered in sun-dappled forest floor habitats.
Timulla contigua
Timulla contigua is a species of velvet ant in the family Mutillidae, a group of wingless wasps known for their potent sting and aposematic coloration. Like other members of the genus Timulla, females are wingless while males possess wings. The genus Timulla is frequently implicated in mimicry relationships with spiders in the genus Sergiolus, which bear similar bold color patterns.
Timulla cyllene
Timulla cyllene is a species of wingless wasp in the family Mutillidae, commonly known as velvet ants. Females are apterous (wingless) and possess a potent sting, a trait shared across the family. The species is part of a genus frequently involved in Müllerian or Batesian mimicry complexes, with some spiders such as Sergiolus capulatus bearing striking resemblance to Timulla species.
Timulla dubitata
Timulla dubitata is a species of velvet ant in the family Mutillidae. The species was described by Smith in 1855. Like other members of the genus Timulla, females are wingless while males possess wings. The species is part of a group of velvet ants that are mimicked by certain ground spiders in the genus Sergiolus.
Timulla euterpe
Timulla euterpe is a species of velvet ant in the family Mutillidae, a group of wingless wasps known for their potent sting and aposematic coloration. Like other mutillids, females are wingless while males possess wings. The genus Timulla is frequently mimicked by spiders in the genus Sergiolus, which share similar habitats in sun-dappled forest floors. T. euterpe is part of a mimicry complex involving multiple Timulla species that resemble each other and their spider mimics.
Timulla ferrugata
velvet ant
Timulla ferrugata is a species of velvet ant in the family Mutillidae, found in the southeastern United States. Females are wingless and wasp-like in appearance, while males possess wings. The species is known for its aposematic orange and brown coloration. Despite their common name, velvet ants are actually solitary wasps, not ants.
Timulla floridensis
Timulla floridensis is a species of velvet ant in the family Mutillidae. The species was proposed in a 1980 Ph.D. dissertation by Sigurd Leopold Szerlip but remains officially undescribed and nomenclaturally invalid because the dissertation was never formally published. As a member of the genus Timulla, it is a wingless female wasp (males have wings) with a potent sting. The species is associated with Florida, where it frequents sun-dappled patches on the floor of deciduous forests.
Timulla grotei
Timulla grotei is a species of velvet ant in the family Mutillidae. Like other members of this genus, females are wingless and wasp-like in appearance, while males possess wings. The genus Timulla is known for species that are frequently mimicked by spiders in the genus Sergiolus, which share similar bold coloration patterns. This particular species occurs in North America and is one of numerous Timulla species documented in the region.
Timulla hollensis
Timulla hollensis is a species of wingless wasp in the family Mutillidae, commonly known as velvet ants. The species is part of a genus noted for aposematic coloration and a potent sting. Males are winged while females are wingless and ant-like in appearance. The species has been documented in the eastern United States, with observations spanning multiple states.
Timulla leona
Timulla leona is a species of velvet ant in the family Mutillidae, a group of wingless female wasps known for their potent sting and striking coloration. The genus Timulla is frequently mimicked by ground spiders in the genus Sergiolus, which share similar habitats in sun-dappled deciduous forest floors. Like other mutillids, T. leona likely exhibits sexual dimorphism with winged males and wingless, ant-like females.
Timulla navasota
Timulla navasota is a species of velvet ant (family Mutillidae), a group of wingless female wasps known for their potent sting and aposematic coloration. The species belongs to a genus frequently mimicked by ground spiders in the genus Sergiolus, which share similar bold red, black, and white patterning. Like other mutillids, females are wingless while males possess wings. The species has been documented in North America with 134 iNaturalist observations.
Timulla oajaca
Timulla oajaca is a species of velvet ant in the family Mutillidae, a group of wingless wasps known for their potent sting and aposematic coloration. The genus Timulla is frequently cited as a model for Müllerian mimicry complexes in North America, with spiders in the genus Sergiolus (Gnaphosidae) among their documented visual mimics. Like all mutillids, females are wingless while males possess wings. The species name refers to Oaxaca, Mexico, suggesting a geographic association with this region.
Timulla ocellaria
Timulla ocellaria is a species of velvet ant in the family Mutillidae. Velvet ants are actually wingless female wasps, not true ants, and are known for their potent sting. The genus Timulla is frequently imitated by spiders in the genus Sergiolus as a form of protective mimicry.
Timulla subhyalina
Timulla subhyalina is a species of velvet ant in the family Mutillidae, a group of wingless female wasps known for potent stings and aposematic coloration. The species is part of a genus frequently involved in mimicry complexes with spiders and other insects. Like other mutillids, females are wingless and ant-like in appearance, while males possess wings. The species has been documented in North America with limited observational records.
Timulla suspensa
Timulla suspensa is a species of wingless wasp in the family Mutillidae, commonly known as velvet ants. Females are wingless and ant-like in appearance, while males possess wings. The species is part of a genus that includes species known for their potent sting and aposematic coloration, often featuring red and black patterning that serves as warning coloration to predators.
Timulla vagans
velvet ant
Timulla vagans is a species of velvet ant (family Mutillidae) distributed across North America including the United States, Mexico, and Canada. As with all velvet ants, females are wingless and wasp-like in appearance, while males possess wings. The species exhibits the characteristic dense, velvety pubescence that gives the family its common name.
Trogaspidiini
Trogaspidiini is a tribe of velvet ants (Mutillidae) characterized by morphological features of the male genitalia and body structure. The tribe includes genera such as Neotrogaspidia, which occurs across the Australasian, Oriental and Palearctic Regions. Members of this tribe exhibit complex taxonomic histories with frequent synonymies and transfers between genera.