Hand drawn Ink art by William McAusland, writing by Colin Chapman
Of all the bug-humans, the bestial humanoid fly is the most repugnant, considered even more repellent than man-cockroaches. This disgust is with good reason too; not only are humanoid-flies truly ugly, but they defecate constantly, buzz loudly, and possess truly vile eating habits, vomiting and drooling on food to pre-digest it before eating. That they also favor decaying organic matter such as feces for their diet simply adds an extra layer of disgust to a creature already considered grossly unappealing.
Even the most tolerant of trading towns will refuse them entry 90% of the time, and when they are accepted they must still pay a hefty entrance fee ahead of time (40+2d12sp) along with a promise to avoid public places and especially avoid eating in public.
https://www.amazon.com/dp/0994923791 or https://www.outlandarts.com/expansionrules.htm