Soh Kam Yung shared with BESGroup a photograph of a Stink Bug, Paracritheus trimaculatus, spotted at Tampines Eco Green on 16 April 2022. It was laying eggs. Those white spots on the back look like a face.
On iNaturalist [ https://www.inaturalist.org/observations/111633708 ]
Family : Pentatomidae (shield bugs or stink bugs)
Interesting snippets : The family name describes the antennae which are divided into 5 segments. They are phytophagous and the three large, white spots make them stand out from other shield bugs. Although they are not rare, not much is known about them.