9-29-15 was my 2nd time at Bryan Beach/Freeport. my 1st time encountering yellow flies. it was sunny when we got there and while I was unloading our fishing gear and getting everything setup, these yellow flies about 3/8" long started biting me. the bites hurt, and really itchy. most of the bites were on my right foot. this morning my right foot was swollen, very itchy and red. had to put ice, and benadryl and hydrocortizone every few hours.http://entomology.ifas.ufl.edu/creatures/livestock/yellow_fly.htm
i've fished Sea Rim, High Island, SLP, Surfside, and have never see or been bit by these yellow flies.