Hylarana annamitica ( Sheridan & Stuart, 2018 )

Hylarana annamitica ( Sheridan & Stuart, 2018)

Materials

Type status: Other material. Occurrence: catalogNumber: IB A. 6402 ; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 64B66777-6AD0-54D9-89BF-C188F8015D34; Taxon: scientificNameID: Hylarana annamitica ; scientificName: Hylarana annamitica ; class: Amphibia; order: Anura ; family: Ranidae ; genus: Hylarana ; specificEpithet: annamitica ; scientificNameAuthorship: ( Sheridan & Stuart, 2018); Location: country: Vietnam; countryCode: VN; stateProvince: Ha Nam; county: Kim Bang; municipality: Kim Bang; locality: Kim Bang SHCA ; verbatimElevation: 52 m; verbatimLatitude: 20 ° 52.230 ' N; verbatimLongitude: 105 ° 81.909 ' E; verbatimCoordinateSystem: WGS 84; Event: eventDate: 24 April 2025; eventRemarks: collected by Nguyen QT, Pham TC, Phan QT, and Pham VA; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: PreservedSpecimen

Type status: Other material. Occurrence: catalogNumber: IB A. 6403 ; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 39EAD54F-64E2-5C7A-BFDE-6E50ED7EF0CA; Taxon: scientificNameID: Hylarana annamitica ; scientificName: Hylarana annamitica ; class: Amphibia; order: Anura ; family: Ranidae ; genus: Hylarana ; specificEpithet: annamitica ; scientificNameAuthorship: ( Sheridan & Stuart, 2018); Location: country: Vietnam; countryCode: VN; stateProvince: Ha Nam; county: Kim Bang; municipality: Kim Bang; locality: Kim Bang SHCA ; verbatimElevation: 52 m; verbatimLatitude: 20 ° 52.230 ' N; verbatimLongitude: 105 ° 81.909 ' E; verbatimCoordinateSystem: WGS 84; Event: eventDate: 24 April 2025; eventRemarks: collected by Nguyen QT, Pham TC, Phan QT, and Pham VA; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: PreservedSpecimen

Description

Morphological characters of the specimens from Ha Nam Province agreed well with the descriptions of Sheridan and Stuart (2018) and To et al. (2025): SVL 40.1–40.4 mm in males (n = 2); head longer than wide (HW 14.2–14.8 mm, HL 16.5–17.1 mm); snout obtusely pointed in dorsal view, longer than eye (RL 6.9–7.1 mm, ED 6.2–6.5 mm); interorbital distance 1.3–1.5 times broader than upper eyelid (UEW 3.6–3.7 mm, IOD 4.9–5.2 mm); tympanum distinct, round, more than half eye diameter (TD 3.7–3.9 mm); vomerine teeth obliquely angled; tongue notched posteriorly; vocal sac openings near corner of jaw in males. Fore-limb slender (HAL 19.0– 20.5 mm); fingers free of webbing, tips of fingers expanded into small discs with circum-marginal grooves, relative finger lengths IV < II <I < III; nuptial pad present in male. Hind-limb slender, tibia longer than thigh (TbL 22.0–24.0 mm; FL 19.0– 21.6 mm); toe tips expanded into discs with circum-marginal grooves; webbing present, webbing formula: I 1 / 2–3 / 4 II 0 – 1 III 0 – 1 IV 1 – 0 V inner metatarsal tubercle elongate; tibio-tarsal articulation reaching between eye and nose. Dorsal skin finely granular; supratympanic fold distinct; dorsolateral fold distinct; throat, chest, belly and ventral surface of thigh smooth. Colouration in life: Dorsum reddish-brown, with a few dark brown mottling spots; lip white yellow; dorsal surface of fore-limb and hind-limb with dark crossbars; dorsolateral fold dark brown; flanks pale grey with dark brown spots; ventral surface slightly yellow, dark mottling on throat, less mottling on chest and underside of thighs (Fig. 14 View Figure 14 ).

Distribution

In Vietnam, this species is known from Bac Kan, Vinh Phuc, Thanh Hoa, Nghe An, Ha Tinh, Hue and Quang Nam Provinces ( Sheridan and Stuart 2018, To et al. 2025). Elsewhere, this species is known from Laos ( Frost 2025).

Ecology

Specimens of Hylarana annamitica were found on the ground near two small streams between 19: 00 h and 21: 00 h. The surrounding habitat was a secondary forest of small hardwood and shrubs.

Conservation

Conservation status. LC (Least Concern) ( IUCN 2025).