Amolops truongi Pham, Pham, Ngo, Sung, Ziegler & Le, 2023

Liu, Shuo, Mo, Mingzhong, Guo, Jimin, Lu, Yi, Wang, Wen, Zhang, Wenxiang, Rao, Dingqi & Li, Song, 2024, First record of Amolops truongi Pham, Pham, Ngo, Sung, Ziegler & Le, 2023 (Anura, Ranidae) from China, Herpetozoa 37, pp. 149-156 : 149-156

Amolops truongi Pham, Pham, Ngo, Sung, Ziegler & Le, 2023

Figs 2 , 3

Specimen examined.

KIZ 2023080 – KIZ 2023083 , four adult males, all collected on 22 July 2023 by Shuo Liu from Qimaba Township , Luchun County, Honghe Prefecture, Yunnan Province, China (22 ° 56 ' 29 " N, 102 ° 6 ' 52 " E, elevation 1430 m a. s. l.) .

Description of the specimens from China.

Male body size relatively small, SVL 39.3–39.9 mm in adult males; head moderate long (HL / SVL 0.36–0.38), longer than wide (HL / HW 1.09–1.15); snout relatively long (SE / SVL 0.16), projecting beyond lower jaw; canthus rostralis distinct; loreal region concave; distance from nostril to snout tip equal to or slightly greater than distance from eye to nostril (SND / END 1.00–1.03); internarial distance greater than interorbital distance (IND / IOD 1.22–1.39); upper eyelid width narrower than interorbital distance (UEW / IOD 0.78–0.94); pupil oval, horizontal; tympanum distinct (TD / ED 0.35–0.40); tympanum-eye distance smaller than tympanum diameter (TED / TD 0.77–0.90); vomerine teeth present; choanae rounded; tongue cordiform, notched posteriorly; vocal sac opening on floor of mouth at corner, sac-like gular pouch, front margin positioned near to level of centre of orbit.

Fore-limb moderate long (FLL / SVL 0.66–0.68); relative length of fingers III> IV> II> I; tips of outer three fingers expanded into discs with circum-marginal grooves; webbing between fingers absent; subarticular tubercles present, oval, formula 1, 1, 2, 2; supernumerary tubercles absent; inner metacarpal (thenar) tubercle large, oval; outer metacarpal tubercle indistinct; glandular nuptial pad on finger I.

Hind-limb relatively long (HLL / SVL 1.78–1.84); tibia longer than thigh length (TL / FL 1.08–1.12); relative length of toes IV> V> III> II> I; all toe tips expanded into discs; webbing between toes deeply incurved, webbing formula I 0–1 / 2 II 0 – 1 III 0 – 1 IV 1 – 0 V; subarticular tubercles distinct, oval, formula 1, 1, 2, 3, 2; inner metatarsal tubercle elongated; outer metatarsal tubercle absent.

Dorsal and lateral surface of head and body smooth with few very small tubercles present on temporal sides of head, above tibiae and vent; supratympanic fold indistinct; dorsolateral fold distinct; ventral surface smooth with flat tubercles on basal ventral thigh.

Colouration in life.

Dorsal sides of head and body green or olive brown with some black dots; lateral side of head and tympanum dark brown or black; a white stripe extending from tip of snout to shoulder on each side; iris pale gold; flanks light brown or brown; dorsal surface of fore-limbs and hind-limbs light brown or brown with dark bands; throat, chest and belly cream with some brown dots; vocal sac orange or light yellow; ventral surface of fore-limbs light red or flesh-coloured; ventral surface of hind-limbs red flesh-coloured or flesh-coloured with some dark brown dots; toe webbing dark brown.

Updated diagnosis.

SVL 37.5–41.3 mm in adult males, 61.5–62.5 mm in adult females; head moderate long (HL / SVL 0.35–0.38 in males, 0.35–0.36 in females), longer than wide; snout relatively long (SE / SVL 0.16 in males, 0.15 in females); vomerine teeth present; tympanum distinct, round (TD / ED 0.35–0.40 in males, 0.36–0.37 in females); skin smooth; supratympanic fold indistinct; dorsolateral fold present; fore-limb moderate long (FLL / SVL 0.65–0.72 in males, 0.64–0.66 in females); hind-limb relatively long (HLL / SVL 1.78–1.92 in males, 1.77–1.79 in females); webbing formula I 0–1 / 2 II 0 – 1 III 0 – 1 IV 1 – 0 V; external vocal sac present and finger I with nuptial pad in adult males.

Distribution.

Amolops truongi is currently known from the type locality in Son La Province, north-western Vietnam and Lvchun County, Honghe Prefecture, southern Yunnan Province, China (Fig. 4 ).

Recommended common name.

We suggest 山罗湍蛙 (Pinyin: shān luó tuān wā) as the Chinese name, deriving from the type locality Son La Province, Vietnam.

Figures

Figure 2. Dorsal view (top) and ventral view (bottom) of the specimens of Amolops truongi from China in preservative.

Figure 3. Dorsal, lateral and ventral views of the male specimen KIZ 2023081 (A – C) and dorsal, lateral and ventral views of the male specimen KIZ 2023082 (D – F) of Amolops truongi from China in life.

Figure 4. Map showing the type locality of Amolops truongi in north-western Vietnam (black star) and the new collection site from Lvchun County, Yunnan Province, China (black dot).