Hello,
it seems that these two names of Charanyca ferruginea / Rusina ferruginea are not linked as synonymous in the database:
https://observation.org/species/719152/
https://observation.org/species/9108/
They are synonyms, see Lepiforum
http://lepiforum.org/wiki/page/Rusina_ferruginea#Weitere_Informationen-Synonyme
Thanks for checking and updating.
Kind regards
Brigitte
Brigitte, it`s not clear to me which entry is the synonym
This is already set as a synonym.