Lauxanioidea is a superfamily

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of flies

Fly

True flies are insects of the order Diptera . They possess a pair of wings on the mesothorax and a pair of halteres, derived from the hind wings, on the metathorax...

 that includes the two large families, the Lauxaniidae

Lauxaniidae

Lauxaniidae is a family of acalyptrate flies. It contains around 1800 described species in 126 genera distributed worldwide. These are generally small flies with large compound eyes, often brightly coloured in life. Many species have different patterned wings...

 and Chamaemyiidae

Chamaemyiidae

Chamaemyiidae is a small family of acalyptrate flies with less than 200 species described worldwide. The larvae of these small flies are active and predatory and are often used for biological control of aphids, scale insects and similar pests...

, and the small families Eurychoromyiidae

Eurychoromyiidae

Eurychoromyia mallea, the broad-headed fly, is a species of fly, the only species in the family Eurychoromyiidae.In 1903, C. A. W. Schnuse, collecting at Sarampiuni in the foothills of the Bolivian Andes, took 4 specimens, all female, of a fly with a strange broad, flat head...

 and Celyphidae

Celyphidae

Celyphidae, commonly known as beetle flies or beetle-backed flies, are a family of flies . About 90 species are known from the Oriental and Afrotropic biogeographic regions.-Description:...

. Generally they are small to medium, densely populated, coloured flies. Chamaemyiidae and Cremifaniidae live as parasites on insects. The family Celyphidae looks like beetles.

Some authors also recognise the family Cremifaniidae, but most place this in the Chamaemyiidae