The Old World tree frog genus Chirixalus is distributed from northeastern India, southern China, continental Southeast Asia to Sumatra and Java. The species of this genus were previously assigned to the genera Chiromantis or Philautus. Here, we describe a newly discovered species of Chirixalus from Java. Chirixalus pantaiselatan, new species, is a small rhacophorid frog (male snout-vent length = 25.3–28.9 mm) that can be distinguished from all congeners using a combination of morphological, molecular, and advertisement call characteristics.

The genus Dentodiaptomus Shen & Tai, 1964, is widely distributed in aquatic habitats in Asia, but only one species, D. javanus (Grochmalicki, 1915), has been described. During our intensive collections of freshwater copepods from several localities in the floodplain of the lower Mekong River Basin in Thailand and Cambodia in 2002 and 2007, a new species of Dentodiaptomus was discovered from five and six localities, respectively. To date, Dentodiaptomus orientalis, new species, is the second member of the genus found to be endemic to Thailand and Cambodia. The new species is rare and closely allied with Dentodiaptomus javanus, which is widely distributed across Southeast Asia and Southern China. Dentodiaptomus orientalis is found in both temporary and permanent water habitats throughout the year. It differs from its congeners in many morphological aspects, especially in the composition of the fifth leg. In this paper, the diagnostic characters of the genus Dentodiaptomus are revised based on specimens of the new species and D. javanus from Thailand and Cambodia.

Coptocheilus maunautim, new species, is described from Vietnam’s Thua Thien-Hue Province. The closest relative of the new species is probably Coptocheilus maydelineae (Páll-Gergely, P.K. Nguyen & Y. Chen, 2019), which also has a “double suture”, but differs in its much stronger shell sculpture. Coptocheilus Gould, 1862, is reinstated for this genus group. The widely used Schistoloma Kobelt, 1902, is an unnecessary replacement name and cannot be conserved. An updated checklist of the members of this genus is appended.

A new species of worm-like lizard, Dibamus floweri, is described from Fraser’s Hill, Pahang, in the central highlands of Peninsular Malaysia based on the following unique combination of characters: maximum SVL of 112 mm; tail length 11.4–15.2% of SVL; labial and nasal sutures absent; rostral suture present but incomplete; a single postocular; four scales bordering the posterior edge of first infralabial; no enlarged, medial, sublabial scale; 21 scale rows around midbody; 23 scale rows around the body immediately posterior to head; 21 scale rows around the body immediately anterior to vent; 175–194 ventral scales; 23–46 subcaudal scales and light coloured bands on body. Dibamus floweri, new species, is the third species of dibamid discovered in Peninsular Malaysia and is the first montane species. Its discovery underscores the importance of uplands regions as important habitats for herpetological diversity and their understudied nature.