Microhyla roedderi sp. nov. LSID: urn:lsid:zoobank.org:act: 0299FDAF-0B60-4FF6-A2AC-F34550C27F42 (Figs. 4, 5; Table 2, Table supplement 2) Holotype. Adult male IEBR A.6271 (Field number KH2022.26), collected by D.T. Do et al. on 8 April 2022 in Van Ninh District, Khanh Hoa Province, Vietnam (12°49'49.0"N 109°11'55.8"E, at an elevation of 784 m a.s.l.). Paratypes (n= 12). Nine adult males IEBR A.6272–6280 (Field numbers KH2022.25, KH2022.28, KH2022.29– 35) and two adult females IEBR A.6281,.6282 (Field numbers KH2022.24, KH2022.27), collection data the same as the holotype; one adult female IEBR A.6283 (Field number PY2022.67), collected in Tay Hoa District, Phu Yen Province, Vietnam (12°51'31.0"N 109°12'55.2"E, at an elevation of 433 m a.s.l., collected by D.T. Do et al. on 5 April 2022. Diagnosis. Microhyla roedderi sp. nov. is distinguished from other species of the subgenus Nanohyla by a combination of the following characters: Size medium (SVL 15.88–17.00 mm, n= 10 in males; 20.74–21.33 mm, n= 3 in females); body habitus slender; snout bluntly round; tympanum hidden; canthus rostralis round, distinct; loreal region oblique, weakly concave; dorsal skin slightly bumpy with low tubercles, slightly concentrated on dosolateral area, scattered over dorsal surface of limbs and upper eyelid; ventral surface smooth; mid vertebral skin ridge and dorsomedial stripe absent; superciliary tubercles absent; supratympanic fold weakly developed; fingers slender, free of webbing, with weak skin fringes on all fingers; finger I reduced slightly, less than half of finger II in length, males without nuptial pad; grooves on dorsal surface of disks present in fingers II–IV; two round, flat palmar tubercles; hindlimbs long, tibiotarsal articulation of adpressed limb reaching well beyond snout; toe webbing formula I1–2II1–2III1–2IV2–1V; inner metatarsal tubercle oval; outer metatarsal tubercle absent; dorsal surface of head and trunk greyish brown to light brown with dark brown markings, a distinct light brown interorbital bar between eyelids, a>–––

Published as part of Hoang, Chung Van, Pham, Cuong The, Nguyen, Truong Quang, Phan, Tien Quang, Ziegler, Thomas, Orlov, Nikolai, Jiang, Jianping & Do, Dang Trong, 2025, A new species of Microhyla (Amphibia: Anura: Microhylidae), with an extended description of Microhyla nanapollexa from Vietnam, pp. 347-369 in Zootaxa 5566 (2) on pages 355-361, DOI: 10.11646/zootaxa.5566.2.6, http://zenodo.org/record/14703031