Mezzoloth
From Ardrana
Mezzoloths, the most common yugoloths of the Lower Planes, are as plentiful as they are lowly and wretched. They look like humanoid insects covered in chitinous plates of a dirty ivory color. They have long, lanky arms and legs; wide, armored skulls; sharp claws that can cut through most nonmagical substances; and glaring red eyes. Mezzoloths also have a limited telepathy.
Note: Mezzoloths originally appeared in this form in the Planescape Monstrous Compendium for the AD&D game from TSR. Its use here is for the purposes of providing context for the campaign only.