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It is a member of the Lauxaniidae, most likely Meiosimyza (= Lyciella). could well be M. platycephala.
Many lauxaniids seem to prefer to walk and jump-fly rather than really fly. Possibly because many can be found among folliage. jumping there will often give another place to sit without much flying and in this way you can conserve energy (think with a human mind, of course).