Wiktionary
bot flies
n. (plural of bot fly English)
Usage examples of "bot flies".
Swarms of bot flies danced about their impervious bodies, looking for dry places to alight.
Still, while Pat was trekking through the jungle, wearing long pants and a long-sleeved shirt to keep off ticks, dengue-fever-carrying mosquitoes, bot flies, and other vermin, she was pickling in her own sweat.