Good question! Will we need a another new genus for flavovirens?
Sergio Córdoba-Córdoba, 2014. Contrasting Phylogeography and Speciation History of Birds in The Northern Andes: a comparative phylogeographic approach. Ph.D. Dissertation, Princeton University:
...To construct the relationships in the Chlorospingus clade, we included most taxa of the genus (except C. flavovirens)...
...For each group I obtained sequences for all the species in the genus (except for one species considered sometimes a subspecies in the hummingbird genus Aglaiocercus (A. berlepschi) and one species in the genus Chlorospingus (C. flavovirens) for which no samples could be obtained)...
Abstract and PDF here