Osca lata

Osca lata, the coliguacho or black horse fly, is a large horse fly whose range includes southern Chile and southern Argentina. The fly has a striking reddish-orange coloration on the side of its thorax and abdomen. It is generally around 2 cm. in adult size.

Like most species of horse flies, the females of Scaptia lata need to feed on mammalian blood before they can produce eggs.