Predatory-wasp
Guides
Oxybelus uniglumis
square-headed wasp
Oxybelus uniglumis is a solitary digger wasp in the family Crabronidae, tribe Oxybelini. The species is specialized for hunting flies (Diptera), capturing them with an extremely concentrated stinging pattern that targets the prey's nervous system. Unlike many related wasps that deliver multiple stings to thoracic ganglia, O. uniglumis typically delivers only a single thoracic sting behind one foreleg base, reflecting the reduced ganglionic structure of fly prey. The species uses its sting apparatus not only for prey paralysis but also for transporting captured flies to nest sites.
Philanthini
Philanthini is a tribe of wasps within the family Crabronidae, established by Latreille in 1802. Members are commonly known as beewolves or bee-killer wasps due to their specialized predatory behavior. The tribe includes genera such as Philanthus, which are notable for their distinctive hunting strategies and, in some species, the use of symbiotic bacteria to protect larval food stores. These wasps are solitary and nest in soil, provisioning their offspring with paralyzed bees.
Philanthus sanbornii
Sanborn's Beewolf
Philanthus sanbornii is a species of beewolf wasp in the family Crabronidae, native to North America. Unlike many congeners that specialize on bees, this species has been documented as a predator of flies (Diptera), particularly small muscoid flies. Females construct simple burrows in sandy soil, capture and paralyze prey, and provision nests for their larval offspring. A five-year study in eastern Massachusetts documented over 3,000 prey items from 108 species of bees and wasps, though subsequent research in Florida identified flies as the primary prey. The species exhibits selective prey capture based on temporal availability, spatial distribution, sex ratio, and body size of available prey.
Pison
Pison is a cosmopolitan genus of spider wasps in the family Crabronidae, comprising approximately 145 described species with many more undescribed, particularly in South America. Adult females hunt and paralyze living spiders to provision nest cells, on which they lay eggs. The genus exhibits diverse nesting strategies, including mud construction, use of natural cavities, and excavation of burrows. Pison wasps are most diverse in the Southern Hemisphere, with about one-third of species occurring in Australia.
Plenoculus davisi
square-headed wasp
Plenoculus davisi is a species of square-headed wasp in the family Crabronidae, first described by W. Fox in 1893. The species is native to North America, with records from Canada and the United States. Five subspecies have been recognized: P. d. atlanticus, P. d. davisi, P. d. gracilis, P. d. mojavensis, and P. d. transversus. As a member of the Miscophini tribe, it belongs to a group of solitary wasps that are typically predatory on other insects.
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.
Pseneo
aphid wasps
Pseneo is a genus of aphid wasps in the family Crabronidae (subfamily Pemphredoninae, tribe Psenini). The genus was established by Malloch in 1933 and contains more than 20 described species. These wasps are part of the apoid wasp lineage, characterized by their specialized predatory behavior on aphids.
Pterocheilus hirsutipennis
A solitary mason wasp in the subfamily Eumeninae, Pterocheilus hirsutipennis is one of approximately 40 North American species in this genus. Like other Pterocheilus, females are fossorial, excavating subterranean burrows in sandy or soft soils rather than using pre-existing cavities or building mud nests. The species was described by Bohart in 1940 and is part of a genus whose members are most diverse in the southwestern United States. Most species biology remains poorly documented.
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Pulverro is a genus of aphid wasps in the family Crabronidae, subfamily Pemphredoninae. The genus was established by Pate in 1937 and contains approximately 13 described species. These wasps are specialized predators of aphids, a characteristic trait of the Ammoplanina group within the Pemphredoninae.
Pulverro costano
Pulverro costano is a species of aphid wasp in the family Crabronidae (subfamily Pemphredoninae). The species was described by Pate in 1937. It is known from North America. Members of the genus Pulverro are part of the ammoplanine complex, a group of small solitary wasps that prey on aphids.
Rhopalum atlanticum
Rhopalum atlanticum is a species of solitary wasp in the family Crabronidae, described by R. Bohart in 1974. The genus Rhopalum comprises small, predatory wasps known as sand wasps that provision nests with paralyzed prey. This species occurs in North America and Middle America. Like other members of its genus, it likely excavates burrows in sandy soils and hunts small insects to provision larval cells.
Rysepyris subtilis
Rysepyris subtilis is a species of sand wasp in the family Bembicidae. The genus Rysepyris belongs to the tribe Bembicini, a group of solitary wasps known for their ground-nesting behavior and predatory habits. Species in this genus are poorly documented in the primary literature, with most information derived from museum specimens and taxonomic catalogs. The specific epithet 'subtilis' suggests subtle or delicate characteristics, though the precise morphological basis for this naming is not clearly documented in available sources.
Spilomena hainesi
Spilomena hainesi is a solitary wasp species in the subfamily Pemphredoninae, described in 1995 by N. Smith. Like other members of its genus, it is an aphid wasp that provisions nests with aphids as food for its larvae. The species is known from North America.
Stictia
horse guards, cowfly tigers, insecto policia
Stictia is a genus of large, often brightly colored predatory sand wasps comprising approximately 30 species, primarily distributed in the Neotropics. The genus is best known for Stictia carolina, commonly called the "Horse Guard," which specializes in hunting horse flies around livestock. Females construct solitary nests in sandy soil, provisioning them with paralyzed flies to feed their larvae. These wasps are valued for their biological control of pest flies, though they are not commercially available. Males engage in aerial patrols and "sun dances" to locate females.
Stizus texanus
Stizus texanus is a species of sand wasp in the family Crabronidae, first described by Cresson in 1873. It belongs to the tribe Stizini within the subfamily Bembicinae. The species is distributed in North America and Middle America, with museum holdings documented from the UCR Entomology Research Museum. As a member of the Crabronidae, it is likely a predatory wasp, though specific biological details for this species remain poorly documented in available sources.