Javanese Bird Grasshopper

Acrididae; Valanga nigricornis (Burmeister, 1838). I first saw this Javanese Bird Grasshopper on Oct 23 and posted a spotting that day - https://www.projectnoah.org/spottings/2034270669 and I thought that was it, a straight-forward simple spotting. There was nothing much to say about it at that time, except to note that it was a nymph, with little stubs which would gradually develop into wings. I continued to see this grasshopper in the days following my spotting. I knew it was the same specimen because it was the only Valanga nigricornis on our string beans and it was always on the plant right at one end of the trellis. So, since I was out there with my camera, taking pictures anyway, I decided to take some more shots of the grasshopper.. Each time I transferred my pictures to my laptop, there was usually a photo of the grasshopper and I started to see the development of the wings. I couldn't think of a way of measuring their rate of growth. I'm sure if I went near it with a ruler, it would spring away and I would probably never see it again. But it did not take me long to realise it had a built-in measuring stick - its abdominal segments. So I started writing in my little note book things like "wings two and one half segments" and it works. The reason that I was so keen on watching the progress of the wing development was that some years ago, I had observed a Melicodes tenebrosa (a similar Acridid) and its wings did not go all the way to full length as I had expected. When its wings reached a certain length, it moulted and then it stayed in an upright position on its plant and allowed the soft, floppy wings to hang down its back for a couple of hours to become stiff and ready for flight. https://www.projectnoah.org/spottings/482560310. The chances are that I will probably not see the moult as it is the rainy season here and I could not be out in a downpour trying to take pictures, of course, it could happen during the night. However, it will happen in the next few days and I will try. If I am lucky enough to get a picture or two, I will add them to this spotting. If not, this spotting can stand alone as a final instar nymph nearing final moult.