Belongs within: Tityridae.
Myiobius is a South American genus of small flycatchers with well developed rictal bristles that reach beyond the tip of the bill.
Myiobius Darwin 1837 [incl. Tyrannula Swainson 1827 (nom. rej.)]B94
| i. s.: M. albicepsF43
| M. cinnamomeusS66
| M. naeviusSS66a
| M. nationi Sclater 1866S66
| M. parvirostrisF43
| M. pulcher Sclater 1860S66
| M. vieillotidesS66
| M. xanthopygiusSS66a
|--M. villosusBKB15
`--+--M. sulphureipygiusBKB15 [=M. xanthopygus sulphureipygiusS18]
| |--M. s. sulphureipygiusE52
| `--M. s. aureatusE52
`--+--M. atricaudusBKB15 [=M. barbatus atricaudusS18]
`--M. barbatusBKB15 [=*Tyrannula barbataB94]
*Type species of generic name indicated
References
[B94] Bock, W. J. 1994. History and nomenclature of avian family-group names. Bulletin of the American Museum of Natural History 222: 1–281.
[BKB15] Burleigh, J. G., R. T. Kimball & E. L. Braun. 2015. Building the avian tree of life using a large-scale, sparse supermatrix. Molecular Phylogenetics and Evolution 84: 53–63.
[E52] Eisenmann, E. 1952. Annotated list of birds of Barro Colorado Island, Panama Canal Zone. Smithsonian Miscellaneous Collections 117 (5): 1–62.
[F43] Fraser, L. 1843. On the collection of birds brought to England by Mr. Bridges. Proceedings of the Zoological Society of London 11: 108–121.
[S66] Sclater, P. L. 1866. On the birds in the vicinity of Lima, Peru. With notes on their habits, by Prof. W. Nation, of Lima, C. M. Z. S. (Part I.) Proceedings of the Zoological Society of London 1866: 96–100.
[SS66] Sclater, P. L., & O. Salvin. 1866. Catalogue of birds collected by Mr. E. Bartlett on the River Uyacali, Eastern Peru, with notes and descriptions of new species. Proceedings of the Zoological Society of London 1866: 175–201.
[S18] Stone, W. 1918. Birds of the Panama Canal Zone, with special reference to a collection made by Mr. Lindsey L. Jewel. Proceedings of the Academy of Natural Sciences of Philadelphia 70: 239–280.