Megophrys microstoma (Boulenger, 1903)
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https://dx.doi.org/10.3897/BDJ.7.e39140 |
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publication LSID |
lsid:zoobank.org:pub:90B52445-FA2F-4B1A-98A1-9219AA151CAC |
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persistent identifier |
https://treatment.plazi.org/id/A29047B5-4347-5AFE-A636-CF6D7E0EF651 |
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treatment provided by |
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scientific name |
Megophrys microstoma (Boulenger, 1903) |
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Megophrys microstoma (Boulenger, 1903)
Materials
Type status: Other material. Occurrence: catalogNumber: TBU SL.2016.419 ; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificNameID: Megophrysmicrostoma; scientificName: Megophrysmicrostoma; class: Amphibia; order: Anura; family: Megophryidae; genus: Megophrys; specificEpithet: microstoma; scientificNameAuthorship: (Boulenger, 1903); Location: country: Vietnam; countryCode: VN; stateProvince: Son La; county: Phu Yen; municipality: Muong Bang; locality: near Cai Village ; verbatimElevation: 680 m; verbatimLatitude: 21°07.18'N; verbatimLongitude: 103°34.06'E; verbatimCoordinateSystem: WGS84; Event: eventDate: October 26, 2017; eventRemarks: collected by A. V. Pham, T. Q. L. Hoang, S. V. Cao, H. V. Cam, and C. V. Cao; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: Preserved Specimen GoogleMaps Type status: Other material. Occurrence: catalogNumber: TBU SL.2016.483 ; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificNameID: Megophrysmicrostoma; scientificName: Megophrysmicrostoma; class: Amphibia; order: Anura; family: Megophryidae; genus: Megophrys; specificEpithet: microstoma; scientificNameAuthorship: (Boulenger, 1903); Location: country: Vietnam; countryCode: VN; stateProvince: Son La; county: Phu Yen; municipality: Gia Phu; locality: near Nhot Village ; verbatimElevation: 990 m; verbatimLatitude: 21°12.38'N; verbatimLongitude: 103°34.06'E; verbatimCoordinateSystem: WGS84; Event: eventDate: October 29, 2017; eventRemarks: collected by A. V. Pham and H. V. Cam; Record Level: language: en; collectionCode: Amphibians; basisOfRecord: Preserved Specimen GoogleMaps
Description
Morphological characters of specimens (n = 2 males) from Son La Province agreed with the descriptions of Ohler (2003) and Hecht et al. (2013): SVL 37.2-39.0 mm; head small, wider than long (HL 10.4-10.6 mm, HW 10.8-11.0 mm, HL/SVL 27-28%, HW/SVL 28-29%); snout truncate, protruding, projecting beyond upper jaw (SL 3.9-4.1 mm), shorter than horizontal diameter of eye (EL 4.3-4.6 mm); loreal region vertical, concave; nostril lateral, closer to tip of snout than to eye (NS 1.4 mm, EN 2.0-2.3 mm); interorbital space flat, narrower than upper eyelid and internarial distance (IOD 2.4-2.6 mm, UEW 3.5-3.9 mm, IN 2.9-3.2 mm); tympanum round, distinct (TD 2.9-3.0); vomerine teeth absent; tongue round; vocal sacs present in males.
Forelimb slender (FLL 23.5-24.5 mm); relative finger lengths I <II = IV <III, tips of fingers round, not enlarged; fingers free of webbing; subarticular tubercles absent; palmar tubercles indistinct.
Hindlimbs slender (HLL 52.9-57.1 mm); tibia longer than thigh (TL 16.9-18.0 mm, FL 16.6-17.1 mm); relative toe lengths I <II <V <III <IV; tips of toes round, slightly swollen; webbing rudimentary; subarticular tubercles indistinct; metatarsal tubercle indistinct; tibio-tarsal articulation reaching to eye.
Skin. Dorsal surface shagreened, with symmetric glandular ridges; flanks shagreened covered with granules; ventral surface smooth.
Colouration in life. Dorsum greyish or light brown, upper surface of limbs with transverse dark brown bars; flanks with some small black spots; ventral surface cream with dark brown marbling ( Fig. 6 View Figure 6 ).
Distribution
In Vietnam, this species has been recorded from Lao Cai and Ha Giang in the North southwards to Dak Lak and Lam Dong provinces ( Nguyen et al. 2009, Hecht et al. 2013). Our new record in Son La Province filled the distribution gap of the species in northwestern Vietnam. Elsewhere, the species is known from China, Laos, Thailand and Cambodia ( Frost 2019).
Ecology
The specimens were found between 19:30 and 22:00 h on branches or stones near rocky streams. The surrounding habitat was secondary forest composed of medium hardwoods and shrubs.
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