#2
I think Mycetophilinae, based on the combination of 7 abdominal spiracles and creeping welts with hooks, and not looking like the larva of
Bolitophila which otherwise matches the previous description.
#3
I agree with Mycetophilinae. Not all larvae of this subfamily are known, but possibly it is even Mycetophila or some close genus Anatella, Cordyla etc.).