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Tessaratomidae
Nymph of Stink or Shield Bug
Tropical forest
Oh sorry, I missed the second line of your comment, @bayucca.
Thanks again for clarifying.
Will just leave the ID at Tessaratomidae
Tessaratomidae, Giant Shield Bug Nymph.
But not Tessaratoma papillosa:
http://www.macaubiodiversity.org/tessara...
I'm not 100% sure but I think it's a Lychee Stink Bug Nymph and after a few more hours the white parts will turn red...!