European Crane Fly
Canadian Forest Service,


Adult Crane Flies do not cause harm to lawns or sting, but it is the larvae that damages lawns. European Crane Fly larvae are 1 inch long worm-like brownish maggots that eat grass roots, creating brown-yellow patches in lawns during the dry, summer season.


European Crane Flies are predominantly found in the Pacific Northwest and New England. 


Cultural Solutions

  • Keeping the lawn well maintained and vigorous will reduce European Crane Flies.
  • Use thatch removal and proper aeration also reduces Crane Flies.