Genus Hybomitra
A genus in the tribe: Tabaninae
There are 55 species, most of which are in Canada and Alaska
Per Bugguide.net http://bugguide.net/node/view/11494 On Skunk Cabbage Leaves
Petersburg, Alaska
I have found these giant flies in Bellefontaine Ohio just outsid the city in farm country. Being from the city of Columbus, these are very scary looking and dive bomb the kids when they are swimming in the pool. Do these monsters BITE? Email me at jerryblank41@yahoo.com if ya know more!!!