Flea Beetle

At first,I could not be sure that this beetle was, unequivocally, from the genus Phyllotreta. There were plenty of photos displayed online which looked like my specimen, but each time I found what I thought was a good match (for example, P. undulata), the distribution was always wrong. So, I reached the point where I felt that I had to go with Phyllotreta sp. Then, it got worse. Most sources stated that Phyllotreta was present in Asia, but Philippines is in Southeast Asia. The closest I got, was the mention of Java, Indonesia in cabidigitallibrary.org. It began to look like the genus was wrong. So, I was about to settle for Chrysomelidae when I got lucky and found a research paper in which Phyllotreta is documented as present in Philippines. Here is the link - https://www.innspub.net/wp-content/uploads/2018/05/JBES-V12-No5-p414-42…