Ceratina (Lioceratina) looks very similar to Ceratina (Xanthoceratina), and it has been suggested that these subgenera may be synonymous (Michener 2007). Female Ceratina (Lioceratina) differ in the lack of a basitibial spine and male Ceratina (Lioceratina) differ in that they lack bundles of hairs on the genitalia - a feature that is present in Ceratina (Xanthoceratina) (Michener 2007).
Ceratina ridleyi has been observed on Rhododendron sp. (family Ericaceae), and on flowers of an undetermined tree within the family Araliaceae. Further, Ceratina flavopicta has been collected on Stachytarpheta (Verbenaceae), Hyptis capitata (Labiatae), and Urena lobata (Malvaceae) (Van Der Vecht 1952).
There are no records on the nesting behavior, but it is likely that they nest in hollowed stems as other species of Ceratina.
There are no known invasives.
Ceratina (Lioceratina) ranges from India through southeastern Asia as far north as the province of Sichuan in China, south to Bali, and east to the Philippines (Michener 2007).