Windowsill-fly

Guides

• Muscina pascuorum

  Pasture Fly, European Scavenger Fly

  Muscina pascuorum is a muscid fly native to Europe that has become established across North America. The species is closely allied to M. stabulans and M. levida. It is known to enter homes in autumn and winter, where adults accumulate on windowsills. Larvae develop in fungi, particularly woodland mushrooms, rather than in carrion or manure like many related muscids. The specific epithet 'pascuorum' refers to pastures, reflecting its original European habitat association.

  MuscidaeDipteraEuropeNorth-Americaintroduced-speciesfungivoreoverwintering-pestwindowsill-flyautumn-emergencepasture-fly