Microhyla butleri Boulenger, 1900

Luong, Anh Mai, Do, Quyen Hanh, Hoang, Chung Van, Phan, Tien Quang, Nguyen, Truong Quang & Pham, Cuong The, 2022, New records of amphibians from Bac Kan Province, Vietnam, Biodiversity Data Journal 10, pp. 75595-75595 : 75595

Microhyla butleri Boulenger, 1900

Materials

Type status: Other material. Occurrence: catalogNumber: IEBR A.4877 ; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Microhyla butleri; class: Amphibia ; order: Anura ; family: Microhylidae ; genus: Microhyla ; specificEpithet: butleri; scientificNameAuthorship: Boulenger , 1900; Location : country: Vietnam; countryCode: VN; stateProvince: Bac Kan; locality: Nam Xuan Lac HSCA ; verbatimElevation: 699 m; verbatimLatitude: 22°16.470'N; verbatimLongitude: 105°31.337'E; verbatimCoordinateSystem: WGS84; Event: eventDate: 28 August 2020; eventRemarks: collected by L. M. Anh and D. H. Quyen; Record Level: language: en; collectionCode: Amphibia; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: IEBR A.4878 ; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Microhyla butleri; class: Amphibia ; order: Anura ; family: Microhylidae ; genus: Microhyla ; specificEpithet: butleri; scientificNameAuthorship: Boulenger , 1900; Location : country: Vietnam; countryCode: VN; stateProvince: Bac Kan; locality: Nam Xuan Lac HSCA ; verbatimElevation: 321 m; verbatimLatitude: 22°17.130'N; verbatimLongitude: 105°33.428'E; verbatimCoordinateSystem: WGS84; Event: eventDate: 27 April 2021; eventRemarks: collected by L. M. Anh and D. H. Quyen; Record Level: language: en; collectionCode: Amphibia; basisOfRecord: PreservedSpecimen Type status: Other material. Occurrence: catalogNumber: IEBR A.4879 ; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Microhyla butleri; class: Amphibia ; order: Anura ; family: Microhylidae ; genus: Microhyla ; specificEpithet: butleri; scientificNameAuthorship: Boulenger , 1900; Location : country: Vietnam; countryCode: VN; stateProvince: Bac Kan; locality: Nam Xuan Lac HSCA ; verbatimElevation: 321 m; verbatimLatitude: 22°17.130'N; verbatimLongitude: 105°33.428'E; verbatimCoordinateSystem: WGS84; Event: eventDate: 27April 2021; eventRemarks: collected by L. M. Anh and D. H. Quyen; Record Level: language: en; collectionCode: Amphibia; basisOfRecord: PreservedSpecimen

Description

SVL 21.3-24.1 mm; head longer than wide (HL 7.7-8.6 mm, HW 6.5-7.7 mm); snout round, longer than eye diameter (RL 2.6-2.8 mm, ED 2.0-2.2 mm); nostrils round, closer to the tip of snout than to eye (NS 1.1-1.6 mm, EN 1.3-1.6 mm); canthus rostralis indistinct, loreal region oblique, not concave; tympanum indistinct; vomerine teeth absent; tongue notched posteriorly. Forelimbs: Forearm slender (FLL 4.2-5.4 mm), hand length (HAL 8.7-10.4 mm); relative finger lengths I <II <IV <III, tips of fingers pointed; fingers free of webbing. Hind-limbs: Thigh slender (FeL 9.1-12.8 mm); tibia five times longer than wide (TbL 10.5-14.6 mm, TbW 1.9-3.1 mm); relative toe lengths I <II <V <III <IV; webbing formula I1- 1½ II1-2III2-3IV3-2V; tibio-tarsal articulation reaching to the eye when leg adpressed along body. Skin: Dorsum smooth, but with some rather large smooth flattened pustules on front part of dorsum; supratympanic fold indistinct; throat, chest, belly and underside of limbs smooth; cloacal region granular.

Colouration in life: Dorsal surface of head and body grey with brownish and reddish marking, in X-shape; a whitish stripe from eye to anterior shoulder; flank grey with black spots, dorsal surface of limbs grey with dark transverse bars; belly cream; throat and chest mottled with dark brown (Fig. 4 ) (determination after Bourret (1942), Taylor (1962)).

Distribution

This is a common species in Vietnam ( Nguyen et al. 2009, Frost 2021). Elsewhere, this species has been recorded from China, Myanmar, Laos, Thailand, Cambodia, Malaysia and Singapore ( Nguyen et al. 2009, Frost 2021).

Ecology

Specimens were found between 19:30 and 20:30 h on the ground. The surrounding habitat was mixed secondary forest of small hardwoods and shrubs.

Figures

Figure 4. The female specimen of Microhyla butleri (IEBR A. 4877; SVL 21.3 mm) in life.