This species has accompanied humans to nearly all parts of the globe.
Classification
from Australian Faunal Directory
Order Diptera - Flies, 8955 named species in Australia at Nov. 2021
Division Cyclorrhapha - Flies having Short Antennae with a Bristle or Arista
Family Piophilidae - Skipper Flies, 7 species in Australia
Genus Piophila
Species Piophila casei