European Crane Flies

European Crane Fly

Canadian Forest Service ,


The adult European Crane Fly looks like a large mosquito with longer legs. Larvae are sometimes called “leatherjackets” because of their tough exterior. The adults are often called “Mosquito eaters” , but do not actually eat mosquitos.


The adults 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
  • Keep lawn well maintained.
  • Use thatch removal and proper aeration.