Perhaps you should take up your struggle over the term with zoologists then: caste: (zoology) A class of polymorphous eusocial insects of a particular size and

Perhaps you should take up your struggle over the term with zoologists then: caste: (zoology) A class of polymorphous eusocial insects of a particular size and function within a colony. https://en.wiktionary.org/wiki/caste https://en.wiktionary.org/wiki/caste