I found this romantic couple while I had observation in my corn field. If I am not mistaken, it is Tipulidae crane fly, but I am curious to know more about its further identity. I would be thankful if anyone can help me.
I think it is genus Nephrotoma, but there are a lot of similar species and a lot of detail is needed to separate them. There is a useful online group that you might like http://www.diptera.info/news.php where you can ask questions, post photos etc.
Yes, I agree this is a mating pair of Nephrotoma. If you use Oosterbroek's excellent online catalogue:
http://ccw.naturalis.nl/
and search on Nephrotoma + Indonesia, you will get a list of 36 species. Each of these you can then go to in turn, to get further information, literature etc. But identification to species from such a picture will be difficult I think, if not impossible.