Belongs within: Loriinae.
Charmosyna is a genus of small, brightly coloured lorikeets with long wedge-shaped tails (Rutgers & Norris 1972).
<==Charmosyna
|--+--C. placentisJT12
| | |--C. p. placentisRN72
| | |--C. p. intensiorRN72
| | |--C. p. pallidiorRN72
| | `--C. p. subplacensRN72
| `--C. rubronotataJT12
| |--C. r. rubronotataRN72
| `--C. r. kordoanaRN72
`--+--C. papouJT12
| |--C. p. papouRN72
| |--C. p. goliathinaRN72
| |--C. p. stellaeRN72
| `--C. p. wahnesiRN72
`--+--Phigys solitariusJT12
`--ViniJT12
|--V. australisJT12
|--V. kuhliiJT12
|--V. peruvianaJT12
|--V. placentisD77
|--V. rubrigularisD77
|--V. stepheniJT12
`--V. ultramarinaJT12
Charmosyna incertae sedis:
C. amabilisJT12
C. aureicinctaRN72
C. diademaJT12 (see below for synonymy)
C. josefinaeJT12
|--C. j. josefinaeRN72
|--C. j. cyclopumRN72
`--C. j. sepikianaRN72
C. margarethae Tristram 1879RN72
C. meekiJT12
C. multistriataJT12
C. palmarumJT12
C. pulchellaAP21
|--C. p. pulchellaRN72
|--C. p. bellaRN72
`--C. p. rothschildiRN72
C. rubrigularisJT12
|--C. r. rubrigularisRN72
`--C. r. krakariRN72
C. toxopeiJT12
C. wilhelminaeJT12
Charmosyna diademaJT12 [=Psitteuteles diadematusS13, Glossopsittacus diadematusS13, Trichoglossus diadematusS13, Vini diademaD81]
*Type species of generic name indicated
References
[AP21] Arlott, N., & B. van Perlo. 2021. Collins Birds of the World. William Collins.
[D81] Day, D. 1981. The Doomsday Book of Animals: A unique natural history of three hundred vanished species. Ebury Press: London.
[D77] Diamond, J. M. 1977. Continental and insular speciation in Pacific land birds. Systematic Zoology 26 (3): 263–268.
[JT12] Jetz, W., G. H. Thomas, J. B. Joy, K. Hartmann & A. Ø. Mooers. 2012. The global diversity of birds in space and time. Nature 491: 444–448.
[RN72] Rutgers, A., & K. A. Norris (eds.) 1972. Encyclopaedia of Aviculture vol. 2. Blandford Press: London.
[S13] Sarasin, F. 1913. Die Vögel Neu-Caledoniens und der Loyalty-Inseln. In: Sarasin, F., & J. Roux (eds) Nova Caledonia: Forschungen in Neu-Caledonian und auf den Loyalty-Inseln. A. Zoologie vol. 1 pt 1 pp. 1–78, pls 1–3. C. W. Kreidels Verlag: Wiesbaden.