Amolops himalayanus (Boulenger, 1888)

Materials

Type status: Other material. Occurrence: catalogNumber: KIZ 2017002; individualCount: 1; lifeStage: juvenile; occurrenceID: 43DC4C6E-ED61-558F-8083-2CF830E39168; Taxon: scientificName: Amolops himalayanus; Location: country: China; stateProvince: Xizang; locality: Pangda Village, Xiayadong Township, Yadong County, Rikaze City; verbatimElevation: 1860 m; verbatimCoordinates: 27°15'13"N 89°1'16"E; Event: eventRemarks: collected by Hengying Wang on 27 July 2017; Record Level: basisOfRecord: preserved specime

Description of the specimen from China

Morphological measurements of the specimen (Fig. 1) are provided in Table 2. SVL 22.9 mm; head moderate long (HL / SVL 0.38), slightly longer than wide (HL / HW 1.08); snout moderate long (SL / SVL 0.16), projecting beyond lower jaw; canthus rostralis distinct; loreal region slightly concave; distance from nostril to snout tip slightly smaller than distance from eye to nostril; internarial distance slightly greater than interorbital distance (INS / IOS 1.07); upper eyelid width almost equal to interorbital distance (UEW / IOS 1.05); pupil oval, horizontal; tympanum distinct, small (TD / ED 0.27); tympanum to eye distance greater than tympanum diameter; pineal spot present, indistinct.

Fore-limb relatively long; relative length of fingers III> IV> II> I; tips of outer three fingers expanded into discs, circummarginal grooves present on tips of outer three fingers, absent on first finger; webbing between fingers absent; subarticular tubercles distinct, oval, formula 1, 1, 2, 2; supernumerary tubercles absent; metacarpal tubercles indistinct.

Hind-limb moderate long; tibia almost equal to femoral length (TIB / FEM 1.03); relative length of toes IV> V> III> II> I; all toe tips expanded into discs with circummarginal grooves; webbing between toes deeply incurved; subarticular tubercles distinct, oval, formula 1, 1, 2, 3, 2; supernumerary tubercles absent; inner metatarsal tubercle elongated; outer metatarsal tubercle absent.

Dorsal and lateral surfaces of head and body smooth; dorsal surface of fore-limb smooth, dorsal surface of hind-limb with many small tubercles; supratympanic fold present; discontinuous glandular dorsolateral fold from rear of eye to near vent; ventral surface smooth.

Colouration in life

Dorsal surface of the head and body green, some small black spots on dorsum; dorsal surface of limbs yellowish-green with some brown crossbars; lateral surface of head light green, a black stripe below canthus rostralis from snout tip across eyes to supratympanic fold; upper lip light yellowish-green with irregular brown spots; lateral surface of body light green, a large brown spot just behind supratympanic fold on each side; ventral surface of head light yellow, lower lip yellowish-brown; ventral surface of light greenish-yellow; ventral surface of limbs yellowish-brown (Fig. 2).

Ecological notes

This specimen was found at night in the shrubland near a river on a leaf of an herbaceous plant (Fig. 3). Other amphibian species found in sympatry include Nanorana blanfordii (Boulenger, 1882), N. liebigii (Günther, 1860), Raorchestes yadongensis Zhang, Shu, Liu, Dong & Guo, 2022 and Xenophrys pangdaensis Shu, Li, Wu, Liu, He, Li, Zhang & Guo, 2023.

Recommended common name

We suggest 喜山湍蛙 (Pinyin: xǐ shān tuān wā) as the Chinese name of this species.