The Aschiza are a

section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sign ...

of the

Brachycera The Brachycera are a suborder of the order Diptera. It is a major suborder consisting of around 120 families. Their most distinguishing characteristic is reduced antenna segmentation. Description A summary of the main physical characteristics i ...

. Two large families, the Syrphidae and the

Phoridae The Phoridae are a family of small, hump-backed flies resembling fruit flies. Phorid flies can often be identified by their escape habit of running rapidly across a surface rather than taking to the wing. This behaviour is a source of one of thei ...

, and a number of smaller taxa are in this group. They are similar to most of the familiar

Muscomorpha The Brachyceran infraorder Muscomorpha is a large and diverse group of flies, containing the bulk of the Brachycera, and, most of the known flies. It includes a number of the most familiar flies, such as the housefly, the fruit fly, and the blo ...

with one notable exception; they do not possess a

ptilinum The ptilinum is an eversible pouch on the head, above the base of the antenna in schizophoran flies (a section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, ...

, so lack the prominent ptilinal suture on the face as in other muscoid flies. They do still have a

puparium A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their ...

with a circular emergence opening, but it is not as precisely

ellipsoid An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation. An ellipsoid is a quadric surface; that is, a surface that may be defined as the ...

in shape as is typical for other muscoids. The term was first used by

Eduard Becher Eduard Becher (30 September 1856, Vienna - 11 November 1886, Vienna) was an Austrian entomologist who worked on Diptera. He was the author of an article entitled 'Zur Kenntnis der Kopfbildung der Dipteren' ("Contribution to the knowledge of th ...

References

External links

Tree of Life. Cyclorrhapha
{{Aschiza-stub