Due to this, larger workers tend to have a humped-shape and robust alinotum in contrast to smaller workers.
2.
The pterothoracic nota each have two main divisions : the anterior, wing-bearing alinotum and the posterior, phragma-bearing postnotum.
3.
The head exhibits the greatest shape change and the height of the alinotum grows quicker than its length, where there is a height / length ratio of 0.27 in minor workers and 0.32 in major workers.
4.
Each alinotum ( sometimes confusingly referred to as a " notum " ) may be traversed by sutures that mark the position of internal strengthening ridges, and commonly divides the plate into three areas : the anterior prescutum, the scutum, and the smaller posterior scutellum.