The larvae of dragonfly species, are flat, brown, and possess divergent wing cases. Notably, the abdominal region exhibits long cerci, which are a pair of upper appendages located at the tip of segment 10 towards the end of the abdomen. In its mature nymph stage, the Ophiogomphus sp. displays a greenish-brown coloration, with a body covered in coarse granules that aid in camouflage against the river bottom. Earlier instars may present a more yellowish-brown body. The average dimensions include a body length of 20.5 mm, an abdominal width of 5.6 mm, and a head width of 4.7 mm. Adults of this species feature distinctive markings and color patterns, including a vibrant green thorax, pronounced yellow markings on the dorsal abdomen, and large, transparent yellow-orange patches at the base of each wing. In the teneral stage, the thoracic markings remain yellow for up to seven days. Female individuals closely resemble males but can be differentiated by their thicker abdomen, reduced flare, absence of secondary genitalia, the presence of an ovipositor, and variations in the number and shape of abdominal appendages. The hind-wings’ inner or basal portions are yellow, extending to the basal half in males and two-thirds in females. The abdomen is described as having a “clubtail” due to a slight widening at the end. The abdomen’s black color is adorned with small, triangular yellow spots on top, varying in size. Each abdominal segment, excluding the last one at the posterior end (segment 10), bears a yellow triangular spot on its dorsal side. The dragonfly’s eyes, typical of the species, are green and do not meet at the top of the head. Female individuals can be distinguished by the presence of a short, sharp horn on each side at the rear of the head.