There are many different casts or morphs of ant. These are not based on genetics, but on how the larvae is fed & cared for as it develops. The same DNA can produce a winged queen or a minor worker.
nanitic - minim workers. this name is reserved for the ants from the queen's first batch of eggs.
minim - the very smallest workers, often tasked with care of the queen and eggs
minor - small workers
median - medium sized workers
major - large workers
solider - majors tasked with nest defense