| The head is analogous to a statolith, the movements of which are monitored by fields of hair sensilla located on the head, neck, and prothorax. |
| There is a small blunt spine or process projecting from the ventral aspect of the prothorax. |
| As an indication of more extreme transformations, the frequency of the presence of sternopleural bristles on the proximal lateral prothorax and metathorax was also calculated. |
| The asperous granules of the prothorax are almost contiguous on the whole surface. |
| Relative to the foundress, soldiers have an enlarged prothorax and fore femora, reduced wings and antennae, and a pale exoskeleton. |
| The head also is shorter and narrower, and the prothorax has rounded borders. |
