Hylarana macrodactyla Günther, 1858

Luong, Anh Mai, Phan, Tien Quang, Nguyen, Truong Quang, Tran, Tung Thanh, Ngo, Hien Thu Thi, van Schingen-Khan, Mona, Ziegler, Thomas & Pham, Cuong The, 2025, New records and an updated checklist of the herpetofauna from Tay Yen Tu Nature Reserve, north-eastern Vietnam, Biodiversity Data Journal 13, pp. e 157862-e 157862 : e157862-

Hylarana macrodactyla Günther, 1858

Materials

Type status: Other material. Occurrence: catalogNumber: IB A. 6381 ; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: 128522C6-B4EE-5887-8476-46FE162BCE48; Taxon: scientificNameID: Hylarana macrodactyla ; scientificName: Hylarana macrodactyla ; class: Amphibia; order: Anura ; family: Ranidae ; genus: Hylarana ; specificEpithet: macrodactyla ; scientificNameAuthorship: Günther, 1858; Location: country: Vietnam; countryCode: VN; stateProvince: Bac Giang; locality: Tay Yen Tu NR ; verbatimElevation: 330 m; verbatimLatitude: 21°10.131’N; verbatimLongitude: 106°48.727’E; verbatimCoordinateSystem: WGS 84; Event: eventDate: 5 July 2015; eventRemarks: collected by Pham C. T.; Record Level: language: en; collectionCode: Amphibia; basisOfRecord: PreservedSpecimen

Description

Morphological characters of the specimen from Tay Yen Tu NR agreed well with descriptions of Bourret (1942) and Taylor (1962). Size medium (SVL 41.3 mm); head longer than wide (HL 15.8 mm, HW 9.9 mm); snout round, longer than eye diameter (RL 7.2 mm, ED 4.4 mm); nostrils round, closer to the tip of snout than to eye (NS 2.7 mm, EN 4.4 mm); canthus rostralis round, loreal region oblique, concave; tympanum distinct; vomerine teeth present; tongue notched posteriorly. Fore-limbs: Arms rather long, upper arm length (UAL 12.4 mm), hand length (FAL 35.4 mm); relative finger lengths I <II <IV <III, tips of fingers swollen; fingers free of webbing. Hind-limbs: Thigh slender (FeL 21.5 mm); tibia three times longer than wide (TbL 25.3 mm); relative toe lengths I <II <III <V <IV; tips of toes enlarged; toes about one-half webbed. Skin: Dorsal surface of head and body smooth, flank with few flat warts; median ventral and posterior surface of thigh with regular granulation or areolation; dorsolateral fold glandular. Colouration in life: Dorsal surface of head and body light brown with a narrow median light cream stripe, a cream stripe extending from eye to groin, along dorsolateral fold; flank with small brownish spots, upper limbs light brown with transverse cream bars; ventral surface cream (Fig. 4 ).

Distribution

In Vietnam, this species has been recorded from Ha Giang and Yen Bai Provinces in the north southwards to Ho Chi Minh and Ca Mau Provinces ( Nguyen et al. 2009, Frost 2025). Elsewhere, this species has been recorded from Cambodia, China, Laos, Malaysia, Myanmar and Thailand ( Nguyen et al. 2009, Frost 2025).

Ecology

The specimen was found at 20: 30 h in a small stream. The surrounding habitat was mixed secondary evergreen forest of medium and small hardwoods with shrubs and arrowroot. Air temperatures at the sites ranged from 27.5 ° C to 34.1 ° C and relative humidity ranged from 68 % to 82 %.

Figures

Figure 4. Hylarana macrodactyla (female, IB A. 6381).