Zhangixalus franki Ninh & Nguyen & Orlov & Nguyen & Ziegler 2020, sp. nov.

Zhangixalus franki sp. nov. urn:lsid:zoobank.org:act: 346FA039-3D9A-4F41-A4F2-57F5E7ABA793 Fig. 2 Diagnosis The new species can be assigned to the genus Zhangixalus based on the following morphological characters: snout pointed; presence of intercalary cartilage between terminal and penultimate phalanges of digits, distal end of terminal phalanx in Y-shape; tips of digits expanded into large disks, bearing circum-marginal grooves; fingers webbed; presence of supra-cloacal dermal ridge; and pupil horizontal (Jiang et al. 2019). In addition, the new species is unambiguously nested in the genus Zhangixalus by molecular phylogenetic evidence. It is closely related to Z. duboisi and Z. omeimontis and nested in the same clade with Zhangixalus dugritei (David, 1872), the type species of this genus. The new species is distinguished from its congeners by a combination of the following morphological characters: 1) size large (SVL 77.9–85.8 mm for the males); 2) head slightly wider than long; 3) snout pointed; 4) dorsal skin smooth; 5) finger webbing formula I1-1II0-1III½-0IV; 6) dorsal surface of head and body green with dark brown spots; 7) lower jaw region greyish, throat, chest and belly white; 8) white stripe along edge of jaw, insertion of limbs, and along lateral ridges of fore limbs, hind limbs and flank, separating upper green part from lower grey part. Etymology We name this new species in honor of Dr Frank Mutschmann, late amphibian veterinarian and conservationist from Berlin, Germany, in recognition of his support of our amphibian research and conservation projects in Vietnam. As common names we suggest Frank’s Tree Frog (English), Ếch cây frank (Vietnamese) and Franks Ruderfrosch (German). Material examined Holotype VIETNAM • adult ♂; northern Vietnam, Ha Giang Province, Quan Ba District, in the forest of Tung Vai Commune; 23002′45″ N, 104050′59″ E; elevation 1360 m a.s.l.; 11 Jun. 2019; collected by T.T. Nguyen; VNMN 011682. Paratypes VIETNAM • 4 adult ♂♂; same data as for holotype; 13 Jun. 2019; collected ...