Micryletta hekouensis Liu, Hou, Mo & Rao, 2021

Micryletta hekouensis Liu, Hou, Mo & Rao, 2021

Materials

Type status: Other material. Occurrence: catalogNumber: IB A. 6398 ; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 9B505AB8-0DE7-56F1-852F-C9244A81B4EF; Taxon: scientificNameID: Micryletta hekouensis ; scientificName: Micryletta hekouensis ; class: Amphibia; order: Anura ; family: Microhylidae ; genus: Micryletta ; specificEpithet: hekouensis ; scientificNameAuthorship: Liu, Hou, Mo & Rao, 2021; 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 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. 6399 ; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: 9101472E-4D42-5867-BEE4-1BE6BB35F512; Taxon: scientificNameID: Micryletta hekouensis ; scientificName: Micryletta hekouensis ; class: Amphibia; order: Anura ; family: Microhylidae ; genus: Micryletta ; specificEpithet: hekouensis ; scientificNameAuthorship: Liu, Hou, Mo & Rao, 2021; 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 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 Liu et al. (2021) and Nguyen et al. (2024): SVL 22.3 mm in male (n = 1) and 27.5 mm in female (n = 1); head wider than long (HW 6.9 mm, HL 6.2 mm in male; HW 7.8 mm, HL 7.2 mm in female); snout abruptly round in dorsal view and slightly acuminate in profile, longer than eye (RL 3.3 mm, ED 2.5 mm in male; RL 3.9 mm, ED 2.9 mm in female); interorbital distance 1.9–2.3 times broader than upper eyelid (UEW 1.4 mm, IOD 3.2 mm in male; UEW 2.0 mm, IOD 3.8 mm in female); tympanum visible, round (TD 0.6 mm in male, 0.8 mm in female); vomerine teeth absent; tongue oval, with no notch at posterior tip; external vocal sac present in males. Fore-limb slender (HAL 11.9 mm in male and 14.2 mm in female); fingers free of webbing, tips round and not dilated; nuptial pad absent. Hind-limb slender, tibia longer than thigh (TbL 10.9 mm, FL 10.0 mm in male; TbL 12.5 mm, FL 11.8 mm in female); toe tips round and not dilated; webbing between toes absent; subarticular tubercle present; inner and outer metatarsal tubercles present; tibio-tarsal articulation reaching level of front of eye. Dorsal skin smooth, without dorsolateral fold, flanks and hind-limb with small tubercles; ventral skin smooth. Colouration in life: dorsal surface of head and body as well as upper arm golden, back with two indistinct parallel longitudinal grey stripes; lateral sides of head and body black; ventral side of body and limbs pinkish-brown, chin region brownish-black; chest and lateral region of belly with small and irregular white marbling (Figs 10 View Figure 10 , 11 View Figure 11 ).

Distribution

In Vietnam, this species is recently known from Hai Phong City and Ninh Binh Province ( Nguyen et al. 2024, Frost 2025). Elsewhere, this species is only known from China ( Frost 2025).

Ecology

Specimens of Micryletta hekouensis were found on the ground near a small stream between 19: 30 h and 21: 30 h. Males were recorded calling at the site and tadpoles were observed in temporary water puddles. The surrounding habitat was a mixed secondary forest of small hardwood and shrubs.

Conservation

Conservation status. Not evaluated ( IUCN 2025).