Mountain Dragons of the genus Diploderma Hallowell, 1861 were recently resurrected from the paraphyletic genus Japalura sensu lato (Wang et al., 2019a). Despite the recent split, Diploderma still represents one of the most diverse groups of agamid lizard from Asia, including 25 species recognized currently, with most species found in China ((Wang et al., 2019a, 2019b). Although increasing attention has been paid to cryptic diversity within the genus in Southwest China during the past decade, most studies have focused on a single species complex, D. flaviceps, only (Manthey et al., 2012; Wang et al., 2015, 2016, 2017, 2019a), with few studies on other congeners that also have widespread distributions. One such example is D. dymondi (Boulenger, 1906).