These species were formerly placed in the genus Melidectes. They were moved to the resurrected genus Melionyx based on the results of a molecular phylogenetic study published in 2019. At the same time, the common names were changed from "melidectes" to "honeyeater".[1][2]
^Andersen, M.J.; McCullough, J.M.; Friedman, N.R.; Peterson, A.T.; Moyle, R.G.; Joseph, L.; Nyári, A.S. (2019). "Ultraconserved elements resolve genus-level relationships in a major Australasian bird radiation (Aves: Meliphagidae)". Emu. 119 (3): 218–232. Bibcode:2019EmuAO.119..218A. doi:10.1080/01584197.2019.1595662. S2CID150056949.
^ abGill, Frank; Donsker, David; Rasmussen, Pamela, eds. (2020). "Honeyeaters". IOC World Bird List Version 10.1. International Ornithologists' Union. Retrieved 22 February 2020.