Rana johnsi Smith, 1921

Rana johnsi Smith, 1921 View in CoL

Materials

Type status: Other material. Occurrence: catalogNumber: IB A. 6404 ; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: C54EC80E-8EF6-54FF-9BD0-71424797A132; Taxon: scientificNameID: Rana johnsi ; scientificName: Rana johnsi ; class: Amphibia; order: Anura ; family: Ranidae ; genus: Rana ; specificEpithet: johnsi ; scientificNameAuthorship: Smith, 1921; Location: country: Vietnam; countryCode: VN; stateProvince: Ha Nam; county: Kim Bang; municipality: Kim Bang; locality: Kim Bang SHCA ; verbatimElevation: 24 m; verbatimLatitude: 20 ° 45.637 ' N; verbatimLongitude: 105 ° 80.930 ' E; verbatimCoordinateSystem: WGS 84; Event: eventDate: 25 Apri 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 specimen from Ha Nam Province agreed well with the descriptions of Bourret (1942) and Hecht et al. (2013): SVL 40.9 mm in male (n = 1); head longer than wide (HW 12.2 mm, HL 19.0 mm); snout obtusely pointed, pronounced, longer than eye (SL 6.6 mm, ED 5.6 mm); interorbital distance 1.3 times broader than upper eyelid (UEW 3.5 mm, IOD 4.4 mm); tympanum distinct, round, more than half eye diameter (TD 3.6 mm); vomerine teeth present; tongue notched posteriorly; external vocal sac present in males. Fore-limb slender (HAL 20.0 mm); fingers free of webbing, tips of fingers expanded into small discs, relative finger lengths II <I < IV < III; nuptial pad present in male. Hind-limb slender, tibia longer than thigh (TbL 27.2 mm; TbL 24.4 mm); toe tips expanded into discs; webbing present, webbing formula: I 1 / 2–3 / 4 II 0 – 1 III 0 – 1 IV 1 3 / 4–0 V; inner metatarsal tubercle elongate; outer metatarsal tubercle absent; tibio-tarsal articulation reaching beyond tip of snout. Dorsal skin with some small granules; a Λ-shaped fold between shoulders; some short, oblique dermal folds on limbs; supratympanic and dorsolateral folds distinct; throat, chest, belly and ventral surface of thigh smooth. Colouration in life: Dorsum brown; flank light brown; a small black stripe extending from nostril to eye; tympanum covered by a black lozenge; lateral side of limb with dark pattern; ventral surface cream; gular region marbled with white; thigh yellow (Fig. 15 View Figure 15 ).

Distribution

In Vietnam, this species is known from Lao Cai and Ha Giang Provinces in the north, southwards to Lam Dong and Dong Nai Provinces ( Nguyen et al. 2009). Elsewhere, this species is known from China, Laos, Cambodia and Thailand ( Frost 2025).

Ecology

Specimen of Rana johnsi was found on the ground near a small stream at 21: 00 h. The surrounding habitat was a secondary forest of small hardwood and shrubs.

Conservation

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