Thread-waisted-wasp
Guides
Ammophila azteca
Aztec Thread-waisted Wasp
Ammophila azteca is a thread-waisted wasp in the family Sphecidae, native to Canada, Mexico, and the continental United States. It ranges from near sea level to over 6,000 feet in elevation. The species exhibits distinctive nesting behavior involving pebble-mediated burrow closures and progressive provisioning of caterpillar prey for its larvae.
Ammophila ferruginosa
Ammophila ferruginosa is a species of thread-waisted wasp in the family Sphecidae. It is one of over sixty species in the genus Ammophila found in North America. Like other members of this genus, it is a solitary wasp that provisions underground nests with paralyzed caterpillars as food for its larvae. The species was described by Cresson in 1865 and is recorded from North America, with specific distribution records from Canada including Alberta.
Ammophila formicoides
Ammophila formicoides is a thread-waisted wasp in the family Sphecidae, notable for its ant-mimicking appearance and behavior. It is closely related to A. wrightii, with which it forms a distinct species pair characterized by reddish-brown coloration, small size (under 20 mm), and ground-crawling habits that resemble harvester ants. The species exhibits a primitive behavioral trait: excavating the nest burrow after prey collection rather than before. Females provision nests exclusively with inchworm caterpillars (Geometridae).
Ammophila juncea
Ammophila juncea is a species of thread-waisted wasp in the family Sphecidae. It belongs to a diverse genus of solitary hunting wasps known for provisioning nests with paralyzed caterpillars. Like other Ammophila species, females construct burrows in sandy soil and provide paralyzed prey for their larval offspring. The species was described by Cresson in 1865 and occurs in North and Middle America.
Ammophila nigricans
thread-waisted wasp
Ammophila nigricans is a large, striking thread-waisted wasp in the family Sphecidae, recognized by its deep blue-black body with red abdominal banding and black wings. It is one of the largest eastern species in its genus, comparable in size to A. procera but readily distinguished by its coloration. Females are solitary nesters that excavate burrows in clayey or sandy soil and provision them with paralyzed caterpillars as food for their larvae. The species ranges across the eastern United States from Kansas and Texas to New England and south to Georgia, Florida, and Louisiana. It appears less common than most other Ammophila species.
Ammophila pictipennis
thread-waisted wasp
Ammophila pictipennis is a thread-waisted wasp in the family Sphecidae, widespread in eastern North America and south to Mexico City. It is one of the most common and distinctive members of its genus east of the Rocky Mountains. The species is solitary and nests in sandy or hard-baked soil, provisioning each nest with a single paralyzed caterpillar for its larva. Females exhibit characteristic roosting behavior, gripping vegetation with their mandibles during inclement weather or overnight.
Ammophila placida
Ammophila placida is a thread-waisted wasp in the family Sphecidae, found across the continental United States and Central America. Females construct nests in firm soil, provisioning them with 1–5 paralyzed caterpillars as food for their larvae. The species has been documented using small tools such as pebbles or wood pieces to compact nest closures. Larval development is rapid, with eggs hatching in two days and larvae reaching maturity after five days of feeding.
Ammophila procera
Common Thread-waisted Wasp
Ammophila procera is a large, solitary thread-waisted wasp in the family Sphecidae, among the most conspicuous members of its genus in North America. Females construct burrows in sandy or compact soils, provision them with paralyzed caterpillar prey, and seal the nest after laying a single egg. The species is notable for its elaborate nest-closing behaviors and landmark-based navigation. Adults feed on flower nectar and are frequently observed visiting blossoms, particularly goldenrod.
Isodontia apicalis
grass-carrier wasp
Isodontia apicalis is a solitary thread-waisted wasp in the family Sphecidae, known as a 'grass-carrier' for its distinctive nesting behavior. The species occurs in North and Central America. Like other members of its genus, females construct nests using dry grass to partition cells and plug entrances.
Isodontia auripes
Brown-legged Grass-carrier Wasp, brown-legged grass-carrier
Isodontia auripes, the brown-legged grass-carrier wasp, is a solitary thread-waisted wasp in the family Sphecidae. The species is known for its distinctive nesting behavior: females construct nests in pre-existing cavities such as window tracks, wind chimes, or abandoned carpenter bee tunnels, filling them with dry grass and provisioning them with paralyzed tree crickets (Oecanthus spp.) as food for their larvae. The wasp is non-aggressive toward humans and has been observed using nests made by Xylocopa virginica or mining bees. Larvae feed for approximately three days before pupating for two days.
Isodontia elegans
Elegant Grass-carrying Wasp
Isodontia elegans is a solitary, nest-provisioning thread-waisted wasp in the family Sphecidae. Commonly known as the elegant grass-carrying wasp, it hunts orthopteran prey including tree crickets and katydids, which it paralyzes and stores in nest cells for its developing larvae. The species is notable for using pre-existing cavities—particularly window tracks and wind chime tubes in suburban settings—lining them with finely chewed grass fibers that serve as both partitions between cells and defensive barriers against parasites.
Miscophus slossonae
Miscophus slossonae is a species of solitary wasp in the family Crabronidae, tribe Miscophini. It belongs to a genus of thread-waisted wasps known for provisioning nests with spiders. The species was described in 1897 and is recorded from North America. Like other Miscophus species, it is presumed to be a spider-hunting wasp, though specific biological details for this species remain poorly documented.
Palmodes
Palmodes is a genus of thread-waisted wasps in the family Sphecidae, comprising more than 20 described species. These solitary wasps are known for hunting katydids (Tettigoniidae), particularly large species such as Mormon crickets, which they paralyze and provision in underground burrows for their larval offspring. The genus has attracted scientific attention due to its role as a host for kleptoparasitic wasps in the genus Stizoides.
Palmodes dimidiatus
Palmodes dimidiatus is a species of thread-waisted wasp in the family Sphecidae. It is a solitary, ground-nesting wasp that hunts katydids (Tettigoniidae) as prey for its larval offspring. The species is known to be parasitized by the kleptoparasitic wasp Stizoides renicinctus, which raids its food caches. Palmodes dimidiatus occurs in North America and Middle America.
Palmodes praestans
Palmodes praestans is a thread-waisted wasp in the family Sphecidae, characterized by its distinctive thread-like petiole connecting the thorax and abdomen. The species is known to be kleptoparasitized by Stizoides renicinctus, which exploits its food caches of katydid prey. Like other members of its genus, it hunts katydids (Tettigoniidae) to provision underground nest cells for its larvae.
Podalonia
Cutworm Wasps
Podalonia is a genus of solitary, thread-waisted wasps in the family Sphecidae, commonly known as cutworm wasps. The genus contains approximately 67 described species distributed worldwide except South America. Females hunt soil-dwelling caterpillars (cutworms), paralyze them, and provision underground burrows with a single prey item per cell. Unlike most sphecid wasps, Podalonia females dig their burrow after capturing prey rather than before. The genus is most abundant in western North America.
Podalonia argentifrons
cutworm wasp
Podalonia argentifrons is a species of thread-waisted wasp in the family Sphecidae, subfamily Ammophilinae. Like other members of its genus, it is a solitary hunting wasp that preys on soil-dwelling caterpillars ('cutworms'), paralyzing them to provision underground burrows for its larvae. The species occurs across North America, the Caribbean, and Middle America. Females are active in early spring and may overwinter as adults, emerging on warm winter days to hunt.
Podalonia argentipilis
Cutworm Hunter Wasp, Cutworm Wasp
Podalonia argentipilis is a solitary thread-waisted wasp in the family Sphecidae, subfamily Ammophilinae. Females hunt soil-dwelling caterpillars (cutworms), paralyze them with venom, and provision underground burrows as food for their larvae. Unlike most sphecid wasps, this species digs the burrow after capturing prey rather than before. The species is part of a genus of nineteen North American species that are frequently mistaken for Sphex or Ammophila wasps due to similar body plans.
Podalonia melaena
cutworm wasp
Podalonia melaena is a solitary thread-waisted wasp in the family Sphecidae, described by Murray in 1940. As a member of the cutworm wasp genus, females hunt soil-dwelling caterpillars, paralyze them with venom, and provision underground burrows with this prey for their larvae. The species occurs in western North America, with records from British Columbia, Canada. Like other Podalonia species, it is active in spring and early summer and is considered a beneficial insect in agricultural settings due to its predation on pest caterpillars.
Podalonia robusta
cutworm wasp, cutworm hunter wasp
Podalonia robusta is a solitary, thread-waisted wasp in the family Sphecidae, subfamily Ammophilinae. Females hunt soil-dwelling caterpillars (cutworms), paralyze them with venom, and provision underground burrows as food for their larvae. Unlike most sphecid wasps, this species digs the burrow after capturing prey rather than before. The species has been observed in aggressive nest usurpation, where one female steals a paralyzed caterpillar from another's burrow. Both sexes aggregate in sheltered spaces, with hundreds of individuals sometimes clustering together.
Podium
Podium is a genus of solitary wasps in the family Sphecidae, subfamily Sceliphrinae, established by Fabricius in 1804. These thread-waisted wasps are part of the diverse sphecid wasp lineage, which includes many species that construct nests from mud or hunt prey to provision their offspring. The genus is classified within the tribe Podiini, which shares its root name. As with other sphecid wasps, members of this genus exhibit the characteristic narrow petiole (thread-waisted appearance) and are likely predatory, though specific ecological details for the genus as a whole remain limited in available sources.
Podium krombeini
Podium krombeini is a species of thread-waisted wasp in the family Sphecidae, described by Bohart and Menke in 1963. It belongs to the tribe Podiini within the subfamily Sceliphrinae. The genus Podium comprises predatory wasps that construct mud nests. This species is recorded from Middle America and North America, though specific details about its biology remain poorly documented in the accessible literature.
Podium luctuosum
Podium luctuosum is a species of thread-waisted wasp in the family Sphecidae, first described by Frederick Smith in 1856. It has been documented provisioning its nests with Parcoblatta cockroaches as prey for its developing larvae. The species occurs in Middle and North America, with 614 observations recorded on iNaturalist. Like other members of its genus, it exhibits the characteristic elongated petiole (thread-waisted morphology) typical of sphecid wasps.
Podium rufipes
Podium rufipes is a thread-waisted wasp in the family Sphecidae, averaging 19 mm in length. Females are known to repurpose abandoned nests from Sceliphron wasps and wood-boring beetles, or construct trap nests in wood. The species provisions its young with paralyzed cockroach nymphs.
Prionyx
Prionyx is a genus of solitary thread-waisted wasps in the family Sphecidae, distributed across the Americas from southern Canada to Argentina. All species are specialist predators of grasshoppers (Acrididae), which they paralyze with venom and provision as food for their larvae in underground burrows. The genus is characterized by a globose abdomen, spiny legs with saw-like tarsal claws, and distinctive nesting behaviors. Females dig burrows after securing prey, transport paralyzed grasshoppers to single-celled nests, and seal the entrance upon completion. Some species exhibit facultative kleptoparasitism when nesting aggregations overlap with other wasp species.
Prionyx atratus
Prionyx atratus is a solitary, thread-waisted wasp in the family Sphecidae. It is one of two entirely black species in the genus Prionyx found in North America. Females construct underground burrows in sandy soil to provision with paralyzed grasshoppers as food for their offspring. The species is distributed across virtually the entire United States and into southwest Canada.
Prionyx canadensis
Prionyx canadensis is a solitary, thread-waisted wasp in the family Sphecidae. Females are distinguished from similar species P. parkeri and P. thomae by the absence of silvery hairs on the thorax. Like other members of the genus, this species is a parasitoid that hunts grasshoppers and provisions underground burrows with paralyzed prey for their larvae.
Prionyx fervens
Prionyx fervens is a solitary thread-waisted wasp in the family Sphecidae. It is a ground-nesting predator that hunts grasshoppers, paralyzes them, and provisions its burrow with living prey for larval development. The species ranges from Argentina to the southern United States, with documented nesting behavior observed in coastal southeastern Brazil.
Prionyx parkeri
Parker's Thread-waisted Wasp
Prionyx parkeri is a species of thread-waisted wasp in the family Sphecidae. It is one of seven Prionyx species found in the United States. The species is distinguished from close relatives by two pairs of long palps that are part of its mouthparts. Like other members of the genus, it is a solitary parasitoid wasp that hunts grasshoppers as prey for its larvae.
Prionyx thomae
Prionyx thomae is a solitary, thread-waisted wasp in the family Sphecidae. It is one of seven Prionyx species in the United States, ranging from the southeastern and western U.S. south to Argentina. The species is a specialist predator of grasshoppers, paralyzing them with venom to provision underground nests for its larvae. It lacks a common English name, reflecting its limited economic importance.
Sphecinae
digger wasps, thread-waisted wasps, grass-carrying wasps
Sphecinae is a subfamily of digger wasps (family Sphecidae) characterized by thread-waisted bodies and solitary nesting behavior. Members construct nests in soil, plant stems, or pre-existing cavities, provisioning cells with paralyzed prey for their larvae. The subfamily includes notable genera such as Sphex, Isodontia, and Podalonia, with diverse nesting strategies ranging from burrowing to grass-carrying.
Sphex ashmeadi
thread-waisted wasp
Sphex ashmeadi is a species of thread-waisted wasp in the family Sphecidae. It has been observed in New Mexico, USA, where it visits milkweed flowers. The species is part of the diverse Sphex genus, which includes solitary wasps that excavate burrows and provision them with paralyzed prey for their larvae.
Sphex flavovestitus
Sphex flavovestitus is a species of thread-waisted digger wasp in the family Sphecidae, first described by Frederick Smith in 1856. The species is distributed across the Americas, with records from North America, Middle America, and South America. Two subspecies are recognized: the nominate Sphex flavovestitus flavovestitus and Sphex flavovestitus saussurei. Like other members of the genus Sphex, it is a solitary wasp that constructs subterranean nests provisioned with paralyzed prey for its larvae.
Sphex habenus
Golden-reined Digger Wasp
Sphex habenus is a solitary thread-waisted wasp in the family Sphecidae. Like other members of the genus Sphex, females construct individual subterranean nests provisioned with paralyzed prey for their larvae. The species is distributed across North and Middle America.
Sphex jamaicensis
Jamaican Digger Wasp
Sphex jamaicensis is a solitary thread-waisted wasp in the family Sphecidae. It is known from Florida, Cuba, the Bahamas, and Jamaica. Like other members of the genus Sphex, females are fossorial diggers that construct burrows in soil. The species was originally described by Drury in 1773 in the genus Vespa, creating a complex nomenclatural history involving a secondary homonym with a later Fabricius 1775 description.
Sphex tepanecus
Sphex tepanecus is a species of thread-waisted digger wasp in the family Sphecidae. It is a large solitary wasp known from the western United States, with records from Arizona, Colorado, and potentially Idaho. Like other members of the genus Sphex, it constructs subterranean nests and provisions them with paralyzed prey for its larvae. The species was first described by de Saussure in 1867.