Tabanidae

Horse-fly is the most widely used English common name for members of the family Tabanidae. Apart from the common name "horse-flies", broad categories of biting, bloodsucking Tabanidae are variously known as breeze flies, cleggs, klegs, or clags, deer flies, gadflies, or zimbs. In some areas of Canada, they also are known as bull dog flies, and in Newfoundland and Labrador as stouts. In Australia some species are known as "March flies", a name that in other English-speaking countries refers to the non-bloodsucking Bibionidae..
  Stacking from 25 photos.
 Canon 600D.
 Canon 18-55 with extension tubes.
 F-stop: F-16 .
Tempo de exposição: 1/125.
 Distancia focal: 50mm .
Velocidade ISO: 100