Hi Dr Seow, Can help id these 2 species. Thank you.
#1 Eupolea - lowland - Penang Mainland - Octobe 20, 2023
https://www.inaturalist.org/observations/188246975
#2 Tanaecia - upperside photo only - Penang Botanic Gardens - October 18, 2023
https://www.inaturalist.org/observations/187998665