Tabanus is a genus of large flies commonly known as horseflies. They are known for their painful bites, which they inflict on mammals, including humans. These flies are typically found in warm, sunny areas near water sources, where they breed in moist environments. Horseflies are characterized by their robust bodies and large, multifaceted eyes. They are active during the day and are attracted to movement and dark colors. Tabanus species play a role in the ecosystem as pollinators, but their bites can also transmit diseases to livestock and other animals.