Answer the following question: Information: - In biological classification, circumscriptional names are taxon names that are not ruled by ICZN and are defined by the particular set of members included. Circumscriptional names are used mainly for taxa above family-group level (e. g. order or class), but can be also used for taxa of any ranks, as well as for rank-less taxa. - The Pyrgotidae are an unusual family of flies ( Diptera ) , one of only two families of Cyclorrhapha that lack ocelli . Most species are '' picture - winged '' ( i.e , have patterns of bands or spots on the wings ) , as is typical among the Tephritoidea , but unlike other tephritoids , they are endoparasitoids ; the females pursue scarab beetles in flight , laying an egg on the beetle 's back under the elytra where the beetle can not reach it . The egg hatches and the fly larva enters the body cavity of the beetle , feeding and eventually killing the host before pupating . In the United States , some species of Pyrgota and Sphecomyiella can be quite common in areas where their host beetles ( typically the genus Phyllophaga , or '' June beetles '' ) are abundant . Like their host beetles , these flies are primarily nocturnal , and are often attracted to artificial lights . - Cyclorrhapha is an unranked taxon within the infraorder Muscomorpha. They are called "Cyclorrhapha" ('circular-seamed flies') with reference to the circular aperture through which the adult escapes the puparium. This is a circumscriptional name that has significant historical familiarity, but in the present classification, this name is synonymous with the more recent "Muscomorpha"; details and reasoning are presented . - 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 blow fly. The antennae are short, usually three-segmented, with a dorsal arista. Their bodies are often highly setose, and the pattern of setae is often taxonomically important. What entity does 'pyrgotidae' has the relation 'instance of' with?
Answer:
taxon