Pemphredoninae
Encyclopedia
The subfamilly Pemphredoninae also known as the aphid wasps, is a large group in the wasp
Wasp
The term wasp is typically defined as any insect of the order Hymenoptera and suborder Apocrita that is neither a bee nor an ant. Almost every pest insect species has at least one wasp species that preys upon it or parasitizes it, making wasps critically important in natural control of their...

 family Crabronidae
Crabronidae
Crabronidae is a large family of wasps, that includes nearly all of the species formerly comprising the now-defunct superfamily Sphecoidea. It collectively includes well over 200 genera, containing well over 9000 species. Crabronids were originally a part of Sphecidae, but the latter name is now...

. 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, or plant material, for nesting.

As with all other sphecoid wasps, the larvae are carnivorous; females hunt for prey on which to lay their eggs, mass provisioning
Mass provisioning
Mass provisioning is a term used in entomology to refer to a form of parental behavior in which an adult stocks all of the food for each offspring in a small chamber prior to laying the egg...

 the nest cells with paralyzed, living prey that the larvae feed upon after hatching from the egg.

Subdivisions

The Pemphredoninae are currently divided into four tribes
Tribe (biology)
In biology, a tribe is a taxonomic rank between family and genus. It is sometimes subdivided into subtribes.Some examples include the tribes: Canini, Acalypheae, Hominini, Bombini, and Antidesmeae.-See also:* Biological classification* Rank...

: Entomosericini, Odontosphecini, Psenini, and Pemphredonini; the last of which has by far the largest number of species. The primary distinction between the Psenini and the Pemphredonini, is that the Psenini have a forewing with three submarginal cells, and the Pemphredonini never have more than two submarginal cells on their forewing.

Fossils

Two fossilized wasps from the Weald Clay, Archisphex and Angarosphex are considered to possibly be in the Pemphredoninae.

External links

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