Shade
Monster Junkie
I'm a little confused, are we also writing a swarm version of these? Can't we just say they can hide amongst other insects? Or masquerade as a verminous insect of Fine size or something?
No swarm version--they just hide among existing swarms. So probably some combination of your latter two sentences.
Cleon's suggested Str 11, Dex 17, Con 13, Int 4, Wis 12, Cha 10, no natural armor appeals.
I'll get a Homebrews going shortly.