Wasps in the family Pompilidae are commonly called spider wasps, spider-hunting wasps, or pompilid wasps. The family is cosmopolitan, with some 5,000 species in six subfamilies. Nearly all species are solitary, and most capture and paralyze prey, though members of the subfamily Ceropalinae are kleptoparasites of other pompilids, or ectoparasitoids of living spiders.
Sphecius speciosus, often simply referred to as the cicada killer or the cicada hawk, is a large digger wasp species. Cicada killers are large, solitary wasps in the family Crabronidae. The name may be applied to any species of crabronid which preys on cicadas, though in North America it is typically applied to a single species, S. speciosus. However, since there are multiple species of related wasps, it is more appropriate to call it the eastern cicada killer. This species occurs in the eastern and midwest U.S. and southwards into Mexico and Central America. They are so named because they hunt cicadas and provision their nests with them. In North America they are sometimes called sand hornets, although they are not hornets, which belong to the family Vespidae. Cicada killers exert a measure of natural control on cicada populations and thus may directly benefit the deciduous trees upon which their cicada feed.
The Sphecidae are a cosmopolitan family of wasps of the suborder Apocrita that includes sand wasps, mud daubers, and other thread-waisted wasps.
Mud dauber is a name commonly applied to a number of wasps from either the family Sphecidae or Crabronidae that build their nests from mud; this excludes members of the family Vespidae, which are instead referred to as "potter wasps". Mud daubers belong to different families and are variable in appearance. Most are long, slender wasps about 1 inch (25 mm) in length. The name refers to the nests that are made by the female wasps, which consist of mud molded into place by the wasp's mandibles. Mud daubers are not normally aggressive, but can become belligerent when threatened. Stings are uncommon.
The organ pipe mud dauber is a predatory wasp in the family Crabronidae. They are fairly large wasps, ranging from 3.9–5.1 cm, and have been recorded to fly from May to September. Female and male are similar in colour, a shiny black with pale yellow to white hind hindtarsomere. The organ pipe mud dauber feeds mainly on three genera of spider: Neoscona, Araneus, and Eustala. Melittobia, a parasitoid wasp, is a common ectoparasite of T. politum prepupae. Other sources of parasitism include the Bombyliid fly Anthrax, Chrysidid wasps, and various species of scavenger flies (Miltogramminae). The tufted titmouse is a known predator of T. politum, and may feed on them more commonly than previously thought as the holes made by the titmouse are similar in shape and size to those made by T. politum leaving the nest after pupation.
Philanthus triangulum, commonly known as the European beewolf, bee-killer wasp or the bee-eating philanthus, is a solitary wasp that lives in the Western Palearctic and Afrotropics. Although the adults of the species are herbivores, the species derives its name from the behaviour of the inseminated females, who hunt Western honey bees. The female places several of its paralysed prey together with an egg in a small underground chamber, to serve as food for the wasp larvae. All members of the genus Philanthus hunt various species of bees, but P. triangulum is apparently the only one that specialises in Western honey bees.
The Gasteruptiidae are one of the more distinctive families among the apocritan wasps, with surprisingly little variation in appearance for a group that contains around 500 species in two subfamilies and with 6 genera worldwide.
The subfamily Philanthinae is one of the largest groups in the wasp family Crabronidae, with about 1100 species in 9 genera, most of them in Cerceris; Alexander treats it as having only 8 genera. Historically, this subfamily has frequently been accorded family status. The subfamily consists of solitary, predatory wasps, each genus having its own distinct and consistent prey preferences. The adult females dig tunnels in the ground for nesting.
Philanthus gibbosus, which is commonly referred to as a beewolf due to its predation practices, is a species of bee-hunting wasp and is the most common and widespread member of the genus in North America. P. gibbosus is of the order Hymenoptera and the genus Philanthus. It is native to the Midwestern United States and the western Appalachians. P. gibbosus are often observed to visit flowers and other plants in search of insect prey to feed their young. The prey that P. gibbosus catches is then coated in a layer of pollen and fed to the young wasps.
A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps but are in a separate suborder. The wasps do not constitute a clade, a complete natural group with a single ancestor, as their common ancestor is shared by bees and ants. Many wasps, those in the clade Aculeata, can sting their insect prey.
The subfamily Pemphredoninae also known as the aphid wasps, is a large group in the wasp family Crabronidae, with over 1000 species. Historically, this subfamily has frequently been accorded family status. In some recent phylogenetic analyses, one of the subtribes within this group is the sister lineage to the superfamily Apoidea, and accorded family rank as Ammoplanidae along with Pemphredonidae and Psenidae so as to keep families monophyletic.
Cerceris fumipennis, the only species of buprestid-hunting Crabronidae occurring in eastern North America, is found throughout the continental United States east of the Rockies: from Texas and Florida north to Maine, Wyoming, and into Canada. The wasps most often nest in open areas of hard-packed sandy soil surrounded by woody habitat suitable for their buprestid beetle prey.
The thin-waisted social wasps, which typically reside in Neotropical regions from Central to South America, are a small genus of wasps that build nests and live in colonies ranging in size from 1 to 18 members. Microstigmus is widely considered to be the only true eusocial species within the family Crabronidae. Like all Hymenoptera, Microstigmus has an interesting sex determination pattern. Females are 2n (diploid), spawning from eggs that have been fertilized, while males are 1n (haploid) and spawn from unfertilized eggs. Female wasps contain the eggs within their egg sac and have the option of fertilizing them or not, thus having complete control of the gender of their offspring. This wasp genus, part of the suborder Apocrita, is distinguished physically by the narrow waist (petiole) between the end segment of the thorax (mesosoma) and the beginning of the abdomen (metasoma). Specifically, it is in the subgroup of "apoid wasps", those that exhibit social behavior in nesting and foraging. Evidence does exist that in some species social altruism is visible; however, studies on these topics have been limited. The small size and enclosed nest structure makes it difficult to obtain significant data. Although it was originally classified under the Sphecidae family due to its elongated petiole, Microstigmus has been reclassified into the new Crabronidae family.
Ammophila sabulosa, the red-banded sand wasp, is a species of the subfamily Ammophilinae of the hunting wasp family Sphecidae. Found in northern Europe, the wasp is notable for the mass provisioning behaviour of the females, hunting caterpillars mainly on sunny days, paralysing them with a sting, and burying them in a burrow with a single egg. The species is also remarkable for the extent to which females parasitise their own species, either stealing prey from nests of other females to provision their own nests, or in brood parasitism, removing the other female's egg and laying one of her own instead.
Cerceris tuberculata is a species of wasp in the family Crabronidae.
Bembecinus tridens is a species of sand wasps belonging to the family Crabronidae.
Tachytes etruscus is a predatory, solitary wasp belonging to the family Crabronidae. The species was first described by Pietro Rossi in 1790.
Pison spinolae, commonly known as mason wasp, is a solitary wasp of the family Crabronidae, found throughout New Zealand.
Cerceris rybyensis, the ornate tailed digger wasp, is a Palearctic species of solitary wasp from the family Crabronidae which specialised in hunting small to medium-sized mining bees. It is the type species of the genus Cerceris and was named as Sphex rybyensis by Carl Linnaeus in 1771.
Trypoxylon lactitarse is a species of square-headed wasp in the family Crabronidae. It is found in Central America, North America, and South America. These are fairly common harmless black wasps that build muddy elongate nests on the external walls of houses and low-story apartments. Their characteristic nests resemble pan-flutes in shape, and are provisioned with spiders captured and paralysed by the mother wasp. It lays an egg within each elongate nest cell amongst the invalid spiders, from which a larva will hatch and slowly consume all spiders as food. This species apparently undergoes four larval moults until completing their development as pupae inside a black cocoon.
