The body of Camallanus zakerii is slender and elongated, with a uniform diameter that narrows slightly at both ends. Males are generally shorter than females. The body width is quite similar in both sexes, though slightly wider in females. The thick cuticle has fine transverse striations. The buccal capsule is laterally compressed, bivalved, and features 16 smooth, complete internal buccal ridges that gradually reduce towards the outer margins. Tridents are absent, but a pair of lateral cervical papillae is present. The buccal capsule in males is shorter in length but comparable in width to that in females. The oesophagus consists of two distinct parts: an anterior muscular section, which is shorter in males than in females, and a posterior glandular section, which is longer in males. In males, the caudal alae are poorly developed and there are 11 pairs of caudal papillae, including four pairs pre-anal, two adanal, and five post-anal. Males have two spicules, with the right one being longer than the left. The tail of males ends in a blunt tip. In females, the vulva is located before the midpoint of the body, and the uterus is filled with developing embryos. The tail of females is also blunt and lacks any terminal spike or spine.