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Hello,
This one seems to be a little different than the one I have posted before :
https://diptera.info/forum/viewthread.php?thread_id=85890
In the specimen today, there is a curve on near the junction of R2 and r3.
Informations about the picture :
North-East of Thailand
41130 Ban Phon Ngam
17.3633228, 102.9776517
date : 13/07/2019
size : 25 mm