#2
Scatopsidae surely. As for the genus - externally resembling more the picture with Scatopse subnitens Verral, 1886 - the present valid name
Rhexoza subnitens (Verrall, 1886). But really there are too many Scatopsidae species with unknown larval morphology to be sure....
Rexoza subnitens common in fresh tree wounds filled with sap, possibly in fresh tree holes...
#3
'Rexosa fuscipes' is now
Coboldia fuscipes.
Within Scatopsini and Swammerdamellini larvae have been described in only four genera. Haenni keyed them out in the Contributions to a Manual of Palaearctic Diptera but not every genus was illustrated in that key. Following the description it might be
Coboldia but unfortunately the pictures are just not distinct enough.
