Any member of the dipteran genus Tabanus or, more generally, of the family Tabanidae. These stout flies range from as small as a housefly to as large as a bumblebee. Sometimes called greenheaded monsters, horseflies have metallic or iridescent eyes. Adults are fast, strong fliers usually found around streams, marshes, and wooded areas. They may carry animal diseases, including anthrax, tularemia, and trypanosomiasis. The bites of the bloodsucking females can be painful, and a swarm may suck more than 3 oz (about 90 ml) of blood a day from an animal. Males feed on nectar, honeydew, and plant sap. Horseflies of the genus Chrysops, usually called deerflies, are smaller and have dark markings on the wings.
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Horsefly River and Horsefly Lake were given their names by the miners who came to the area during the Cariboo Gold Rush and were greeted by masses of pesky horseflies, but the village of Horsefly was known as Harper's Camp until approximately 1920 when it was changed to Horsefly.
Then in 1887, the area experienced a second boom when Thaddeus Harper built and operated the first of several hydraulic mines and the town became known as Harper's Camp. One of these mines was also known as Horsefly.
Horsefly offers all the amenities to locals and visitors, including a general store, grocery store, gas station, hardware store, museum, motel and a neighborhood pub.