This subgenus is no longer valid so needs to be synonymized with the genus Corynura.
Source: https://www.researchgate.net/profile/Rocio-Gonzalez-Vaquero/publication/321807103_Phylogeny_of_the_Corynura_group_an_endemic_southern_South_American_clade_sister_to_all_other_Augochlorini_bees_Hymenoptera_Halictidae_and_a_revision_of_Corynura/links/5a5ce288a6fdcc68fa96e7f7/Phylogeny-of-the-Corynura-group-an-endemic-southern-South-American-clade-sister-to-all-other-Augochlorini-bees-Hymenoptera-Halictidae-and-a-revision-of-Corynura.pdf
And Discover Life says the genus has no subgenera.
swapped https://www.inaturalist.org/taxon_changes/129608
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Source: https://www.researchgate.net/profile/Rocio-Gonzalez-Vaquero/publication/321807103_Phylogeny_of_the_Corynura_group_an_endemic_southern_South_American_clade_sister_to_all_other_Augochlorini_bees_Hymenoptera_Halictidae_and_a_revision_of_Corynura/links/5a5ce288a6fdcc68fa96e7f7/Phylogeny-of-the-Corynura-group-an-endemic-southern-South-American-clade-sister-to-all-other-Augochlorini-bees-Hymenoptera-Halictidae-and-a-revision-of-Corynura.pdf
And Discover Life says the genus has no subgenera.