Nothybidae

Definition

A monotypic family of true flies (Diptera) containing only the genus Nothybus. These are colorful, elongate flies historically placed in various higher groups but now recognized as a distinct family-level lineage within the muscomorph flies. The family has undergone recent taxonomic revision to clarify its boundaries and relationships.

Etymology

From the type genus Nothybus, of uncertain derivation; the suffix -idae denotes family rank in zoological nomenclature.

Example

Specimens of Nothybus longithorax, the type species of the only genus in Nothybidae, display the family's characteristic bright coloration and slender, wasp-mimicking body form.

Related Terms

• Diptera
• Nothybus
• monotypic family
• muscomorph
• Brachycera

Usage Notes

Always treated as plural in formal taxonomic usage (the Nothybidae are...). The family's monotypic status—containing only one genus—makes it a useful example when discussing family-level taxonomy and the challenges of ranking small, distinctive lineages. Formerly included in broader concepts of other dipteran families; current circumscription reflects molecular and morphological revision. Not to be confused with similarly named groups in other taxa.