This change of generic placement was committed by Wang et al., 2015 and supported in the full listing of the genus by Sankaraman & Vaidya, 2023.
Sankararaman, H., Vaidya, A. Notes on genus Numenes Walker (Lepidoptera: Erebidae: Lymantriinae) with new country record for N. grisa Chao and rediscovery of N. flagrans Tams from India. Int J Trop Insect Sci 43, 2033–2037 (2023). https://doi.org/10.1007/s42690-023-01098-0 Wang H, Wahlberg N, Holloway JD, Bergsten J, Fan XL, Janzen DH, Hallwachs W, Wen LJ, Wang M, Nylin S (2015) Molecular phylogeny of Lymantriinae (Lepidoptera, Noctuoidea, Erebidae) inferred from eight gene regions. Cladistics 31(6):579–592. https://doi.org/10.1111/cla.12108
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.