Abstract
Larvae of Leptodius exaratus from an ovigerous female collected from the intertidal region of North Obhur, Jeddah, Saudi Arabia, were reared in the laboratory up to megalopa stage, and all the larval stages are described and illustrated. Mostly, former descriptions of this species were inconsistent, made about two decades before, and some were incomplete. Therefore, all the zoeal and megalopa stages of L. exaratus are redescribed and illustrated. The morphological features of the larvae of the present study were compared with those of the same species and L. affinis described from worldwide. The male gonopds of L. exaratus collected from the study sites are described and compared with those of the male gonopds of L. exaratus sensu lato described from elsewhere using SEM micrographs.