The cosmopolitan bee genus Ceratina, often referred to as small carpenter bees, is the sole lineage of the tribe Ceratinini, and closely related to the more familiar carpenter bees. Wikipedia
Ceratina bees are a group of native bee species that do not produce honey but are important pollinators of crops and wild plants. Ceratina bees are not aggressive Bionet
Spotted at Marsiling Park
Thanks, John Ascher and Melissa Ong Bees & Wasps of Singapore for the ID
