For a game I'm working on I need a monstrous humanoid fly. I looked throught PFSRD and found ants (formians), bees (thriae) and spiders (arachs), but no flies. Thus I'm asking you guys and gals for help at either repurposing an existing monster or alternatively homebrewing it from scratch. Any ideas how that could look like mechanically?
The only thing that is important is that it's monstrous humanoid and small sized. It also should probably be weakish, like 1/2 CR (it's a fly after all) and not too smart.