on both pest and beneficial organisms often associated with livestock and poultry production....

, decaying vegetation 20 to 30 days > 20 miles Remarks: Blood feedi ng results in decreased performance production. Foot stomping is good indication of fly presence. Horse fly, Tabanus atratus several species 4, 5 (on front) 1 to 3 years Margins...
species to one year Remarks: Transmit bluetongue and encephalitis; feed in evening and at night. Mosquitoes, Culex spp. 11 7 to 30 days several species Aedes spp. water-filled holes, animal wastes, swamps Stagnant water containing organic matter...

The two principal fly pests of confined livestock are house flies and stable flies. House flies, Musca domestica (fig. 1), are non biting insects that breed in animal droppings, manure piles, decaying silage, spilled feed, bedding, and other organic matter...
at each meal. Cows’ stomping of feet is a good indication that stable flies are present because they normally attack legs and bellies (fig. 4). Production performance declines in infested herds because of the painful bites the cows sustain and the animals...