All of our kind aboard this ship are from that worker caste, which also provides our warriors.

While the minor workers can be smaller than one millimeter, they have also major worker castes.

The high queen mortality has also resulted in interesting responses by the worker caste.

It is a parasitic ant that has no worker caste.

This species, over evolutionary time, has lost its worker caste altogether.

The species is unique for lacking a worker caste, the queens and males living entirely off the care of the pavement ant.

These two have major and minor workers, while Aphaenogaster has only a single worker caste.

All vaati are born into the wergadeam, or worker caste.

The takeover now complete, the Polyergus queen gains not only a nest, but a worker caste as well.

Many allodapine species exhibit very simple forms of social organization, without clear queen or worker castes.