Oncaea bathyalis -[ taxon-inquirendum__Species ]-  ----->   Oncaea bathyalis
Oncaea neobscura -[ nomen-dubium__Species ]-  ----->   Oncaea neobscura
Oncaea obscura -[ nomen-dubium__Species ]-  ----->   Oncaea obscura
Oncaea venusta -[ unknown__Species ]-  ----->   Oncaea venusta