Body division: The body is divided into three regions viz. head, thorax and abdomen.
Abdomen:
1. The abdomen is elongated and made up of ten segments. Each segment has a dorsal tergum and ventral sternum.
2. Tergum is jointed to the sternum laterally by a soft cuticle called pleura.
3. The posterior segments are telescoped in. Due to this, the eighth and ninth terga get overlapped by the seventh. The tenth tergum projects backward and is deeply notched. It bears a pair of small, many jointed anal cerci.
4. The abdomen is narrow and tapering in males as compared to females.The ninth sternum of males also bears a pair of short, unjointed anal style.
