Xenophrys lancangica Lyu, Wang & Wang 2023
Creators: name: Dau, Vinh Quang
name: Pham, Cuong The
name: Nguyen, Truong Quang
name: Thai, Toan Canh
name: Tran, Anh Dinh
name: Pham, Anh Van
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Rhacophoridae
Xenophrys
Xenophrys lancangica

description: Xenophrys lancangica Lyu, Wang & Wang, 2023
Materials
Type status: Other material. Occurrence: catalogNumber: DQV 0085; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: D 973 A 0 ED- 6 F 81 - 5 A 0 B-A 72 B- 717 AF 63 D 19 E 0; Taxon: scientificNameID: Xenophrys lancangica; scientificName: Xenophrys lancangica; genus: Xenophrys; specificEpithet: lancangica; scientificNameAuthorship: Lyu, Wang & Wang, 2023; Location: country: Vietnam; countryCode: VN; stateProvince: Ha Tinh; county: Ha Tinh; municipality: Vu Quang; locality: near Huong Quang Commune; verbatimElevation: 260 m; verbatimLatitude: 18 ° 20 ' 29.72 " N; verbatimLongitude: 105 ° 14 ' 29.27 " E; verbatimCoordinateSystem: WGS 84; Event: eventDate: Jume; eventTime: 2013; eventRemarks: collected by V. Q. Dau and T. C. Thai; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: PreservedSpecimen
Description
Morphological characters of the specimen from Ha Tinh Province matched the description of Lyu et al. (2023): SVL 67.6 mm in male (n = 1); head wider than long (HL 24.8, HW 25.1 mm, HL / SVL 36.7 %, HW / SVL 37.1 %); snout obliquely truncate, projecting beyond upper jaw (RL 10.1 mm), as long as horizontal diameter of eye (ED 10.0 mm); canthus rostralis well developed; loreal region concave; nostril lateral, closer to eye than to tip of snout (NS 5.1 mm, EN 4.7 mm); interorbital space flat, broader than upper eyelid and narrower than internarial distance (IOD 10.5 mm, UEW 7.1 mm, IN 4.6 mm); tympanum distinct (TD 5.2 mm); vomerine teeth present; tongue weakly notched posteriorly; vocal sac present in male. Fore-limb slender (HAL 33.2 mm); relative finger lengths II <IV <I <III; fingers without dermal fringe, free of webbing; tips of fingers round, slightly swollen; subarticular tubercles indistinct; palmar tubercles indistinct; nuptial pads on dorsal bases of fingers I and II. Hind-limb slender, tibia longer than thigh (TbL 37.0 mm, FL 34.6 mm); relative toe lengths I <II <V <III <IV; tips of toes round, slightly swollen; webbing rudiment; toes dermal narrow lateral fringes; metatarsal tubercle indistinct; subarticular tubercles indistinct; inner and outer metatarsal tubercles indistinct; tibiotarsal articulation reaching to the position between nostril and tip of snout when limb adpressed along body.
Skin: Dorsal surface smooth with sparse small granules; a weak discontinuous X- shaped ridge on centre of dorsum, dorsolateral ridges present; outer margin of upper eyelid with a weak medial bumped appendage; flank with sparse large tubercles; supratympanic fold present, from posterior edge of eye to axilla; ventral surface smooth.
Colouration in life: Dorsal surface brown-yellowish, with a triangular marking between eyes, a Y-shaped marking on centre of dorsum; dorsal limb with dark transverse bands; throat and chest brown, with a round white spot on each side of the chest present; ventral surface whitish, ventral surface of limbs reddish (Fig. 4).
Distribution
In Vietnam, this species is knnown from Dien Bien, Phu Tho, Thanh Hoa, Nghe An, Quang Binh and Quang Tri Provinces (Frost 2024). Elsewhere, this species is known from China, Laos and Thailand (Frost 2024).
Ecology
The specimen was found on the tree at 20: 24 h pm. The surrounding habitat was evergreen forest of medium hardwoods and shrubs.
Notes
Xenophrys lancangica closely resembles X. maosonensis and X. truongsonensis, but it differs from X. maosonensis by having the tibiotarsal articulation reaching to the position between nostril and tip of snout (vs. reaching to centre of eye in X. maosonensis) (Lyu et al. 2023) and from X. truongsonensis by having flank with large tubercles (vs. with small tubercles in X. truongsonensis); toes lateral fringes absent (vs. toes with narrow lateral fringes); and white spots on flank and back of thigh larger than those in X. truongsonensis (Luong et al. 2022).
description: Published as part of Dau, Vinh Quang, Pham, Cuong The, Nguyen, Truong Quang, Thai, Toan Canh, Tran, Anh Dinh & Pham, Anh Van, 2024, New records of amphibians from Ha Tinh Province, Vietnam, pp. e 122598 in Biodiversity Data Journal 12 on pages e122598-122598, DOI: 10.3897/BDJ.12.e122598