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Or a Phyllomimus sp. This genus has records in Los Baños Laguna. However, the images I found are close but not exactly matching.
Sample image: http://gaga.biodiv.tw/9507bx/861.htm
Los Baños record: http://www.botanicus.org/primeocr/botani...
For now, I'll suggest down to subfamily level only, and hope someone could confirm ID down to genus/species:
Family Tettigoniidae Krauss, 1902
Subfamily Pseudophyllinae Burmeister, 1838
Looks like a Leaf-mimicking Katydid of genus Pseudophyllus, but I could not find an exact ID.