There are deep grooves at the bases of all but the first tergum. The respiratory siphon consists of two filaments which are extensions of the eighth abdominal tergum. There are well defined punctate markings on each tergum. Contraction makes the tergum and base of the wing pull down. Indirect flight muscles are attached to the tergum and sternum. Each segment of the abdomen is represented by a sclerotized tergum and sternum. The abdomen is separated into five tergum. They are uniformly distributed and coarse textured on the fifth tergum. Larvae are with long 3 segmented urogomphi and simple (non lobate) 8th tergum. The third tergum is black in color. The first metasomal tergum, or back, with subhorizontal dorsal surface rounds into the anterior surface. The sides of the second tergum are clothed in long silver setae. Some feature a yellow apical margin of the first tergum as well. Like the female, the male has an abdomen separated into five tergum. Most of its species lack a transverse carina on the first metasomal tergum.