I still remember it well. The fly family Tabanidae has 4,500 species, and it includes horse flies (genus Tabanus) and deer flies (genus Chrysops). About 1,000 species of horse flies are described.

Here's what you should know about them. Tabanus nigrovittatus, also known as greenhead flies, are a species of biting horse-fly. They are commonly found around coastal marshes and wetlands on the ...