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Horn Flies

Name: Horn Flies

Kingdom: Animalia

Phylum: Arthropoda

Class: Insecta

Order: Diptera

Family: Muscidae

Species: H. irritans


Horn flies are most commonly found on farms and ranches. The adult will find a suitable host and remain on it and others in the same herd for life.


Male typically feed around 20 times and female around 40 times daily, and when not feeding they tend to rest around the horn region of the host. They primarily feed on cattle but, to a lesser extent, horses, sheep and goats

Method of Travel:



  • Several species of predator beetles feed on horn fly eggs and maggots in cattle droppings and may reduce horn fly production by more than 90%.

Steps to control:

  • Good, long lasting, low-toxic methods of insect control can be done with Knock Down X-Max Flying & Crawling Insect Killer or other Knock Down products listed below.