16 4

NOTES ON GEOGRAPHIC DISTRIBUTION Check List 16 (4): 1025–1041 https://doi.org/10.15560/16.4.1025

First report on the anuran fauna of Hai Ha forest, Quang Ninh Province, Vietnam

Cuong The Pham1, Quyen Hanh Do2, Hai Ngoc Ngo3, 4, 5, Tung Thanh Tran6, Thomas Ziegler4, 5, Truong Quang Nguyen1, 7

1 Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi 10072, Vietnam. 2 Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi 334 Nguyen Trai Road, Hanoi 11400, Viet- nam. 3 Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi 10072, Vietnam. 4 Cologne Zoo, Riehler Strasse 173, D-50735 Cologne, Germany. 5 Institute of Zoology, University of Cologne, Zülpicher Street 47b, D-50674 Cologne, Germany. 6 Vinh Phuc College of Education, Trung Nhi Street, Phuc Yen, Vinh Phuc Province 15900, Vietnam. 7 Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi 10072, Vietnam. Corresponding author: Truong Quang Nguyen, [email protected]

Abstract Two field surveys were conducted in the Hai Ha forest, Quang Ninh Province, northeastern Vietnam in 2015 and 2016. Based on mophological examinations, we provide the first list of 27 anuran species from this area. Ten species are recorded for the first time from Quang Ninh Province. The anuran fauna of Hai Ha District also contains one species listed in the IUCN Red List as Vulnerable, two species listed in the Red Data Book of Vietnam as Endangered, and two other species endemic to Vietnam (Limnonectes quangninhensis and Quasipaa acanthophora).

Keywords Anurans, morphology, new records, taxonomy, Hai Ha forest, notheastern Vietnam.

Academic editor: Abhijeet Bayani | Received 12 March 2020 | Accepted 4 August 2020 | Published 20 August 2020

Citation: Pham CT, Do QH, Ngo HN, Tran TT, Ziegler T, Nguyen TQ (2020) First report on the anuran fauna of Hai Ha forest, Quang Ninh Province, Vietnam. Check List 16 (4): 1025–1041. https://doi.org/10.15560/16.4.1025

Introduction Recent herpetological research has determined a very Jin, Li, Stuart & Wu, 2018; and Lycodon pictus Janssen, high biodiversity of reptiles and amphibians in the bor- Pham, Ngo, Le, Nguyen & Ziegler, 2019 (David et al. der areas between Vietnam and China (Pham et al. 2016, 2012; Nguyen et al. 2013; Pham et al. 2016, 2020; Jans- 2017b). A series of new species and new country records sen et al. 2019). have been recently discovered in the region, e.g. Oligo- In Hai Ha District of Quang Ninh Province, in the don nagao David, Nguyen, Nguyen, Jiang, Chen, Teynié Vietnam side, two new species were recently described, & Ziegler, 2012; Gekko adleri Nguyen, Wang, Yang, viz. Limnonectes quangninhensis Pham, Le, Nguyen, Lehmann, Le, Ziegler & Bonkowski, 2013; Bufo gar- Ziegler, Wu & Nguyen, 2017 and Opisthotropis hai- garizans Cantor, 1842; Odorrana lipuensis Mo, Chen, haensis Ziegler, Pham, Nguyen, Nguyen, Wang, Wang, Wu, Zhang & Zhou, 2015; Amolops wenshanensis Yuan, Stuart, & Le, 2019 (Pham et al. 2017b; Ziegler et al.

© The authors. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 1026 Check List 16 (4)

2019). These new discoveries from Quang Ninh Prov- Methods ince underline the significantly underestimated biodi- versity of northeastern Vietnam. Based on the results Field surveys were conducted in the Hai Ha forest, Hai of our recent field surveys in the period between 2015 Ha District, Quang Ninh Province (Fig. 1) in June 2015 and 2016, we herein provide the first list of amphibians by Pham CT, Ngo HN and in May 2016 by Pham CT, recorded from Hai Ha forest, Hai Ha District, Quang Nguyen TV. Hai Ha District contains more than 15,000 Ninh Province. ha of natural forest (https://haiha.quangninh.gov.vn).

Figure 1. Map showing the sampling site in Hai Ha District (black square), Quang Ninh Province, northeastern Vietnam. Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1027

The main habitat type was secondary forests of medium to cloaca), TYD = maximum tympanum diameter, TED and small hardwoods mixed with shrubs and vines at ele- = distance between anterior margin of tympanum and vations between 100 and 900 m above sea level (a.s.l.) posterior corner of eye, UEW = width of upper eyelid. (Fig. 2). Sex was determined by the presence of internal vocal sac Survey transects were set up along eight streams opening or gonadal inspection. For webbing formula, we and three forest paths, approximately 1,000–1,200 m in followed Glaw and Vences (2007). length. We also surveyed four small ponds in the forest for searching amphibian specimens. After photograph- Results ing individuals in life, specimens were euthanized in a closed vessel with a piece of cotton wool containing Bufonidae Gray, 1825 ethyl acetate (Simmons 2002), fixed in 80% ethanol for five hours, and then transferred to 70% ethanol for per- Duttaphrynus melanostictus (Schneider, 1799) manent storage. Specimens referred to in this paper are Figure 3A deposited in the collection of the Institute of Ecology and Materials examined. VIETNAM • 1 ♂, 1 ♀; Quang Biological Resources (IEBR), Hanoi, Vietnam. Ninh Province, Hai Ha District, Quang Son Commune; Taxonomic identification was based on examina- 21°32.120′N, 107°39.418′E; alt.154 m; 5 May 2016; Pham tion of specimens and data obtained from the literature, CT and Nguyen TV leg.; collected on the ground of for- for example Bourret (1942), Taylor (1962), Inger et al. est paths; IEBR 4613, 4614 (1999), Ziegler (2002), Ohler (2003), Bain et al. (2003, Identification. Size large (male SVL 45.8 mm, female 2009), Bain and Nguyen (2004a, 2004b), Dubois and SVL 93.4 mm); head wider than long (HL 14.6–31.6 Ohler (2009), Fei et al. (2009, 2010), Ohler et al. (2011), mm, HW 16.2–39.3 mm); snout truncate; parotoid glands Hecht et al. (2013), Hou et al. (2017), Yuan et al. (2018), prominent, elongate; tympanum distinct, round (TYD and Yu et al. (2019). Measurements were taken with digi- 2.3–6.4 mm); vomerine teeth absent; tongue round pos- tal calipers to the nearest 0.1 mm (Wabeco, Germany). teriorly. Fingers free of webbing, toes with basal web- Abbreviations are as follows: ED = horizontal eye diam- bing, webbing formula: I2–2½II1½–3III2–3IV3–2V; eter (eye length), EN = distance between anterior corner tibio-tarsal articulation reaching up to the tympanum. of eye and nostril, HL = head length, HW = head width, Skin: dorsum and upper surface of limbs with coni- IND = internarial distance, IOD = interorbital distance, cal, spiny warts; warts smaller on flanks, venter finely NS = distance between nostril and tip of snout, SL = granular. snout length, SVL = snout–vent length (from tip of snout Coloration in life: upper head and dorsum yellowish

Figure 2. Evergreen forest of Hai Ha District in Quang Ninh Province, Vietnam. Photograph C.T. Pham 1028 Check List 16 (4)

Figure 3. Bufonidae (A, B), Megophryidae (C–E), and Microhylidae (F–H) of Hai Ha forest, Quang Ninh Province, Vietnam. A. Duttaphrynus melanostictus (IEBR 4613). B. Ingerophrynus galeatus (IEBR 4616). C. Leptobrachella minima (IEBR 4620). D. Megophrys maosonensis (IEBR 4628). E. Megophrys microstoma (IEBR 4630). F. Microhyla butleri (IEBR 4632). G. Microhyla heymonsi (IEBR 4634). H. Microhyla pulchra (IEBR 4637). Photographs C.T. Pham. Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1029 grey to dark brown with black spines; venter cream; tip limbs granular; supratympanic fold present, from poste- of fingers and toes black; tip of warts black (Bourret rior edge of eye to axilla; venter smooth. 1942; Ziegler 2002). Coloration in life: dorsal surface light brown or red- Distribution. This is a common species in Vietnam dish brown; flanks cream with some black spots; dorsal (Nguyen et al. 2009). Elsewhere, the species has been limbs light brown with dark crossbars; venter irregular known from Sri Lanka and India eastwards to Malaysia brown with cream markings (Ohler et al. 2011). and the Philippines (Frost 2020). Distribution. In Vietnam, this species has been reported from Dien Bien, Son La, Hoa Binh, and Thanh Hoa Ingerophrynus galeatus (Günther, 1864) provinces (Frost 2020). This is the first record of L. min- Figure 3B ima from Quang Ninh Province. Elsewhere, the species Materials examined. VIETNAM • 1 ♂, 1 ♀; Quang has been reported from Thailand and Laos (Frost 2020). Ninh Province, Hai Ha District, Quang Son Commune; 21°36.208′N, 107°41.298′E; alt. 425 m; 9 May 2016; Megophrys maosonensis Bourret, 1937 Pham CT and Nguyen TV leg.; collected on the ground Figure 3D near a small stream; IEBR 4615, 4616. Materials examined. VIETNAM • 2 ♀; Quang Ninh Identification. Size large (male SVL 54.8 mm, female Province, Hai Ha District, Quang Son Commune; 21° SVL 71.2 mm); head wider than long (HL 14.6–31.6 mm, 34.370′N, 107°38.421′E; alt. 395 m; 10 May 2016; Pham HW 16.2–39.3 mm); snout truncate; nostril closer to tip CT and Nguyen TV leg.; collected on the rock of water- of snout than to eye (NS 1.5–1.9 mm, EN 3.7–5.1 mm); fall; IEBR 4628, 4629. vomerine teeth absent; tongue elongate, round poste- Identification. Size large (females SVL 88.0–89.3 mm); riorly; a well-developed bone crest beyond eye above head longer than wide (HL 31.4–32.3 mm, HW 31.0– tympanum, reaching oval parotoid gland; tympanum 32.3 mm); snout round; nostril further to tip of snout distinct, smaller than eye length (TYD 3.9–4.4 mm, ED than to eye (EN 5.1–5.9 mm, NS 5.7–6.4 mm); tym- 4.4–5.7 mm). Fingers free of webbing; toes with rudi- panum round, distinct (TYD 5.1 mm); vomerine teeth mentary webbing; tibio-tarsal articulation reaching to present; tongue round, nicked behind. Fingers without the eye. Skin: dorsum with warts; flanks with tubercles; dermal fringe, free of webbing; tips of fingers round; venter granular. tips of toes round; webbing formula I2–2½II2–3½III3– Coloration in life: dorsum grey with reddish warts 4IV4–2½V; tibio-tarsal articulation reaching to the eye. and brown to dark grey marbling; limbs with dark brown Skin: dorsal surface and upper of limbs smooth, flanks bars, venter pale yellowish grey with some black mark- granular; supratympanic fold present; venter smooth. ings (Bourret 1942; Ziegler 2002; Hecht et al. 2013). Coloration in life: dorsal surface light brown; flanks Distribution. In Vietnam, this species has been reported cream; dorsal limbs light brown with black crossbars; from northern Vietnam to Dong Nai Province (Nguyen venter cream with brown pattern and white spots (Bour- et al. 2009). This is the first record of I. galeatus from ret 1942). Quang Ninh Province. Elsewhere, the species has been Distribution. In Vietnam, this species has been reported known from China (Hainan), Laos, and Cambodia (Frost from Lao Cai, Cao Bang, and Vinh Phuc provinces 2020). (Frost 2020). This is the first record of M. maosonensis Megophryidae Bonaparte, 1850 from Quang Ninh Province. Elsewhere, the species has been reported from China (Frost 2020). Leptobrachella minima (Taylor, 1962) Figure 3C Megophrys microstoma (Boulenger, 1903) Figure 3E Materials examined. VIETNAM • 11 ♂; Quang Ninh Province, Hai Ha District, Quang Son Commune; 21° Materials examined. VIETNAM • 2 ♂; Quang Ninh 35.865′N, 107°40.159′E; alt. 768 m; 7–10 May 2016; Province, Hai Ha District, Quang Son Commune; 21° Pham CT and Nguyen TV leg.; collected on the rock in 36.026′N, 107°42.252′E; alt. 330 m; 9 May 2016; Pham small streams; IEBR 4617–4627. CT and Nguyen TV leg.; collected on leaves near rocky Identification. Size small (males SVL 28.8–35.2 mm); streams; IEBR 4630, 4631. head longer than wide (HL 10.6–12.7 mm, HW 10.2– Identification. Size small (males SVL 29.5–33.0 mm); 12.6 mm); snout slightly pointed; nostril closer to tip head shorter than wide (HL 8.3–9.4 mm, HW 8.4–9.5 of snout than to eye (EN 1.6–2.4 mm, NS 2.4–3.6 mm); mm); snout truncate, protruding; nostril closer to tip of tympanum round, distinct (TYD 1.4–2.1 mm); vomerine snout than to eye (EN 1.5–1.7 mm, NS 0.9 mm); tym- teeth absent; tongue oval, notched posteriorly. Fingers panum distinct (TYD 2.0–2.5 mm); vomerine teeth ab- without dermal fringe, free of webbing; tips of fingers sent. Fingers without dermal fringe, free of webbing; round, slightly swollen; tips of toes slightly swollen; tips of fingers round, not enlarged into discs; subartic- webbing formula I2–2½II2–3III2½– 4IV4–2½V; tibio- ular tubercles absent; palmar tubercles indistinct; tips tarsal articulation reaching to the eye. Skin: dorsal sur- of toes round; webbing rudimentary; subarticular tuber- face of head smooth; dorsum, flanks and upper part of cles absent; metatarsal tubercle indistinct; tibio-tarsal 1030 Check List 16 (4) articulation reaching to the eye. Skin: dorsal surface vomerine teeth absent; tongue large, round posteriorly. shagreened with symmetric glandular ridges; flanks Fingers free of webbing, tips of fingers widened into shagreened with scattered granules; venter smooth. small discs; toes with webbing at base, webbing for- Coloration in life: dorsum reddish brown, upper sur- mula I2–2½II2–3III3–4IV4–3V; tibio-tarsal articulation face of limbs with dark brown transverse bars; a white reaching to anterior edge of eye. Skin: dorsum and venter bar present below the eye; flanks with some small black smooth, supratympanic fold indistinct. spots; venter cream with brown marbling (Ohler 2003). Coloration in life: uniform light brown above; with Distribution. In Vietnam, this species has been reported a thin, white vertebral line extending from tip of snout from Lao Cai and Ha Giang provinces in the north, to vent; one small black spot in middle of back; head southwards to Dak Lak and Lam Dong provinces. Else- and body with a black lateral band extending from tip of where, the species is known from China, Laos, Thailand, snout to near groin; venter white (Bourret 1942; Ziegler and Cambodia (Nguyen et al. 2009; Frost 2020). 2002; Bain and Nguyen 2004a). Distribution. This is a widespread species in Vietnam Microhylidae Günther, 1858 (Nguyen et al. 2009). Elsewhere, the species is known from India, China, Laos, Thailand, Cambodia, Malaysia, Microhyla butleri Boulenger, 1900 and Indonesia (Nguyen et al. 2009; Frost 2020). Figure 3F Materials examined. VIETNAM • 1 ♂, 1 ♀; Quang Ninh Microhyla pulchra (Hallowell, 1861) Province, Hai Ha District, Quang Son Commune; 21° Figure 3H 30.757′N, 107°39.544′E; alt. 75 m; 4 May 2016; Pham Materials examined. VIETNAM • 2 ♂, 1 ♀; Quang CT and Nguyen TV leg.; collected on forest paths near a Ninh Province, Hai Ha District, Quang Son Commune; small stream; IEBR 4632, 4633. 21°31.420′N, 107°38.949′E; alt. 144 m; 7 May 2016; Identification. Size small (male SVL 23.7 mm, fe- Pham CT and Nguyen TV leg.; collected from the banks male SVL 28.4 mm); head longer than wide (HL 6.6– of a small stream and on forest paths; IEBR 4635–4637. 8.2 mm, HW 6.1–7.9 mm); snout pointed, snout length Identification. Size small (males SVL 29.9–34.3 mm, greater than eye diameter (SL 1.8–2.0 mm, ED 3.3–3.6 female SVL 37.4 mm); body flattened, triangular shaped; mm); nostril closer to tip of snout than to eye (NS 1.5– head slightly wider than long (HL 8.2–10 mm, HW 9.4– 1.6 mm, EN 1.7–2.1 mm); tympanum hidden; vomerine 10.1 mm); snout pointed; tympanum invisible; vomer- teeth absent; tongue round posteriorly; male with visible ine teeth absent; tongue short, round posteriorly; males vocal sacs. Fingers free of webbing, toes with webbing with vocal sacs. Fingers free of webbing, tips of fingers at base, webbing formula: I2–2½II1½–3III2½– 4IV4–2V; not enlarged; toes webbed, webbing formula I1–2II1– tibio-tarsal articulation reaching to the eye. Skin: dor- 3III2½–3½IV4–2V; tibio-tarsal articulation reaching sum, flanks, dorsal surface of limbs smooth with small between eye and tip of snout. Skin: dorsum and venter tubercles; venter smooth. smooth; a distinct fold present between posterior edges Coloration in life: dorsal surface of head and body of the eyes; cloacal region granular. grey with brownish and reddish markings; one whit- Coloration in life: dorsum brown with a dark brown, ish stripe from eye to the base of fore limb; limbs with V-shaped marking, containing brown and white alternat- brown transverse bars; throat and chest mottled with ing bands; dark brown transversal band from posterior dark brown; venter cream (Hecht et al. 2013; Pham et corner of the eye towards upper flanks; groin and ante- al. 2017a). rior part of thigh yellow; limbs with transverse bars; ven- Distribution. This is a widespread species in Vietnam, ter whitish yellow; throat and chest speckled with grey except for the Mekong Delta (Nguyen et al. 2009). Else- (Bourret 1942; Ziegler 2002; Bain and Nguyen 2004a). where, the species is known from China, northeastern Distribution. This is a common species in Vietnam India, Myanmar, Thailand, Malaysia, and Singapore (Frost 2020). Elsewhere, this species in known from (Frost 2020). northeastern India to southern China, Cambodia, Guam, Indochina, and Thailand (Frost 2020). Microhyla heymonsi Vogt, 1911 Figure 3G Dicroglossidae Anderson, 1871 Material examined. VIETNAM • 1 ♀; Quang Ninh Province, Hai Ha District, Quang Son Commune; 21° Fejervarya limnocharis (Gravenhost, 1829) 31.254′N, 107°40.523′E; alt. 97 m; 8 May 2016; Pham Figure 4A CT and Nguyen TV leg.; collected on forest path; IEBR Materials examined. VIETNAM • 2 ♂; Quang Ninh 4634. Province, Hai Ha District, Quang Son Commune; 21° Identification. Size small (female SVL 26.2 mm); body 31.420′N, 107°38.949′E; alt. 144 m; 7 May 2016; Pham flattened, triangle shaped; head longer than wide (HL 7.3 CT and Nguyen TV leg.; collected on forest paths; IEBR mm, HW 7.2 mm); snout pointed; longer than eye (SL 4638, 4639. 2.9 mm, ED 1.5 mm); nostrils closer to tip of snout than Identification. Size medium (males SVL 43.5–46.7 mm); to eye (NS 1.4 mm, EN 1.7 mm); tympanum concealed; head longer than wide (HL 15.4–16.7 mm; HW 13.6–16.7 Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1031

Figure 4. Dicroglossidae of Hai Ha forest, Quang Ninh Province, Vietnam. A. Fejervarya limnocharis (IEBR 4638). B. Hoplobatrachus rugu- losus (IEBR 4640). C. Limnonectes bannaensis (IEBR 4645). D. Limnonectes limborgi (IEBR 4532). E. Limnonectes quangninhensis (male) (IEBR 3912). F. Limnonectes quangninhensis (female) (IEBR 3915). G. Occidozyga lima (IEBR 4647). H. Quasipaa acanthophora (IEBR 4648). Photo- graphs C.T. Pham. 1032 Check List 16 (4) mm); snout pointed, longer than eye (SL 6.7–7.4 mm, ED longer than eye diameter (SL 8.9–12.6 mm, ED 7.7–11.7 4.1–4.9 mm); nostrils closer to tip of snout than to eye mm); canthus rostralis indistinct; loreal region oblique (NS 2.9–3.2 mm, EN 3.6–4.1 mm); tympanum distinct and slightly concave; nostril closer to tip of snout than (TYD 2.8–3.3 mm); vomerine teeth present; tongue bi- to eye (EN 4.3–5.9 mm, NS 4.3–6.7 mm); tympanum in- fid; male with vocal sacs. Fingers free of webbing, tips visible; vomerine teeth present; tongue bifurcated pos- of fingers blunt, not expanded; toes webbed, webbing teriorly; lower jaw with two tooth-like processes; males formula I1–2II1–2⅓III2–3IV2–1½V; tibio-tarsal articu- without vocal sacs. Arms short, fingers free of webbing, lation reaching to the eye. Skin: dorsum granular with tips of fingers obtuse or slightly swollen; subarticular tu- several irregular dermal folds; supratympanic fold dis- bercles on fingers and toes large; hind limbs short; toes tinct; venter smooth; males with a nuptial pad on finger I. short, fully webbed; tips of toes dilated into small discs; Coloration in life: dorsal surface of head and body subarticular tubercles large; inner metatarsal tubercle greyish green with some mottled brown; a white ver- large, outer metatarsal tubercle absent; tibio-tarsal artic- tebral stripe from tip of snout to before vent present or ulation reaching to the eye. Skin: dorsally and ventrally absent; lips with dark vertical bars; limbs with trans- smooth; small and homogenous tubercles on the leg and verse bars or spots; venter cream (Bourret 1942; Taylor foot; supratympanic fold present. 1962; Ziegler 2002). Coloration in life: dorsum reddish brown to greyish Distribution. In Vietnam, this species has been reported brown, mostly with dark mottling or marbling; some- from the entire country (Nguyen et al. 2009). Elsewhere, times with light vertebral stripe; lower region of flanks this species is known from China, Myanmar, Laos, Cam- lighter; limbs with dark transversal bands; venter cream, bodia, Thailand, Malaysia, and Indonesia (Frost 2020). ventral side of limbs darker; throat, pectoral region, belly and outer edges of limbs with dark mottles (Ye et al. Hoplobatrachus rugulosus (Wiegmann, 1834) 2007; McLeod et al. 2015; Pham et al. 2019). Figure 4B Distribution. In Vietnam, this species is known from Material examined. VIETNAM • 1 ♂; Quang Ninh Ha Giang and Cao Bang provinces in the north, south- Province, Hai Ha District, Quang Son Commune; 21° wards to Thua Thien Hue Province (Pham et al. 2018). 30.673′N, 107°39.452′E; alt. 156 m; 4 May 2016; Pham Elsewhere, this species is known from China, Myanmar, CT and Nguyen TV leg.; collected from the bank of a and Laos (Frost 2020). small stream; IEBR 4640. Limnonectes limborgi (Sclater, 1892) Identification. Size large (male SVL 102.9 mm); head Figure 4D broader than long (HW 38.1 mm, HL 34.7 mm); snout Material examined. VIETNAM • 1 ♂; Quang Ninh oval in dorsal view; tympanum round, smaller than eye Province, Hai Ha District, Quang Son Commune; 21° diameter (TYD 5.8 mm, ED 9.1 mm); vomerine teeth 34.230′N, 107°38.482′E; alt. 450 m; 10 May 2016; Pham present; tongue bifid. Arms short; fingers without web- CT and Nguyen TV leg.; collected on the ground near a bing; tips of fingers obtusely pointed; hind limbs short; small stream; IEBR 4532. toes fully webbed, tips of toes pointed, without discs; Identification. Size small (male SVL 28.5 mm); head lon- tibio-tarsal articulation reaching to the eye. Skin: dor- ger than wide (HL 11.8 mm, HW 11.2 mm); snout slightly sum granular with irregular rows of elongate dermal pointed anteriorly in dorsal view; snout length greater ridges; flanks and upper surface of limbs with tubercles; than eye diameter (SL 4.4 mm, ED 3.6 mm); tympa- venter smooth; supratympanic fold distinct. num visible, round, approximately 50% of eye diameter; Coloration in life: dorsum light brown with black vomerine teeth in two oblique ridges; tongue cordiforn, blotches; chest surface whitish with black blotches; ven- deeply notched posteriorly; arms short and thin; fingers ter cream (Bourret 1942; Taylor 1962; Ziegler 2002). free of webbing; tips of fingers blunt, not expanded into Distribution. In Vietnam, this species has been reported discs. Tibia and thigh short; tips of toes blunt, not ex- from the entire country (Nguyen et al. 2009). Elsewhere, panded into discs; webbing formula I1–2II1½–2½III2– this species is known from China, Taiwan, Myanmar, Laos, 3IV3½–1½V; tibio-tarsal articulation reaching between Thailand, Cambodia, and Malaysia (Nguyen et al. 2009). eye and tip of snout. Skin: dorsal surface of head and body smooth with small tubercles; supratympanic fold Limnonectes bannaensis Ye, Fei & Jiang, 2007 distinct; dorsolateral folds present; venter smooth. Figure 4C Coloration in life: dorsal surface light brown or light Materials examined. VIETNAM • 5 ♂, 1 ♀; Quang Ninh yellow with small dark spots; a black cross bar between Province, Hai Ha District, Quang Son Commune; 21° the eyes and an inverted V shaped marking between the 34.198′N, 107°38.404′E; alt. 460 m; 11 May 2016; Pham shoulders; thighs and tibia with dark brown cross bars; CT and Nguyen TV leg.; collected from the banks or on venter cream; throat cream with black pattern (Bourret the rock of a small stream; IEBR 4641–4646. 1942; Inger and Stuart 2010). Identification. Size large (males SVL 61.2–90.6 mm, fe- Distribution. In Vietnam, this species has been re- male SVL 66.5 mm); head large, flattened, wider than ported from Lao Cai Province in the north, southwards long (HL 28.8–40 mm, HW 26.0–39.3 mm); snout round, to Dong Nai and Kien Giang provinces (Nguyen et al. Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1033

2009; 2019). Elsewhere, the species has been reported Identification. Size small (male SVL 25.3 mm); head from Laos, Cambodia, Thailand, and Myanmar (Inger longer than wide (HL 8.6 mm HW 8.1 mm); snout short, and Stuart 2010; Frost 2020). a rather pointed oval; nostril at the midway between eye and tip of snout (EN 1.8 mm, NS 1.6 mm); tympanum Limnonectes quangninhensis Pham, Le, Nguyen, distinct (TYD 0.9 mm); vomerine teeth absent; tongue Ziegler, Wu & Nguyen, 2017 elongate, pointed posteriorly. Fingers short with elongate Figure 4E, F pointed digits, webbed at base; toes fully webbed; tibio- Materials examined. VIETNAM • 1 ♂, 2 ♀; Quang tarsal articulation reaching to tympanum. Skin: dor- Ninh Province, Hai Ha District, Quang Son Commune; sum with small spines and tubercles; supratympanic fold 21°30.751′N, 107°38.550′E; alt. 119 m; 16 June 2015; distinct. C.T. Pham and H.N. Ngo leg.; collected in the water Coloration in life: dorsal surface of head and dorsum of rocky streams; IEBR 3907–3909. • 3 ♂, 3 ♀; Quang brownish with a green line from tip of snout to vent; two Ninh Province, Hai Ha District, Quang Son Commune; dark brown lines on chest area; venter and ventral sur- 21°32.296′N, 107°39.376′E; alt. 229 m; 7 May 2016; C.T. face of limbs with white spots; (Bourret 1942; Taylor Pham and Nguyen TV leg.; collected in the water of 1962). rocky streams; IEBR 3910–3915. Distribution. This is a widespread species in Vietnam Identification. Size lager (males SVL 51.1–62.2 mm, fe- (Nguyen et al. 2009). Elsewhere, the species is known males SVL 49.3–62.9 mm); habitus robust with enlarged from India, Bangladesh, China, Myanmar, Laos, Thai- head; head longer than wide (HL 23.3–31.1 mm, HW land, Cambodia, Malaysia, and Indonesia (Nguyen et al. 20.1–29.5 mm in males; 20.5–25.8 mm, 20.2–23.4 mm 2009). in females); snout round anteriorly in dorsal view; ros- tral length greater than eye diameter (SL 8.2–11.5 mm, Quasipaa acanthophora Dubois & Ohler, 2009 ED 6.8–8.7 mm in males; 7.6–9.7 mm, 6.1–8.7 mm in fe- Figure 4H males); tympanum distinct, approximately 60% of eye Material examined. VIETNAM • 1 ♂; Quang Ninh diameter (TYD 4.0–5.5 mm in males; 4.1–5.0 mm in fe- Province, Hai Ha District, Quang Son Commune; 21° males); vomerine teeth in two oblique ridges; tongue cor- 34.370′N, 107°38.421′E; alt. 395 m; 10 May 2016; Pham diform, deeply notched posteriorly; lower jaw with two CT and Nguyen TV leg.; collected from a rocky stream; tooth-like; external vocal sac absent in males. Arms IEBR 4648. short; fingers free of webbing; tips of fingers blunt, not Identification. Size large (male SVL 71.8 mm); head expanded into discs; finger I with nuptial pad, com- wider than long (HW 32.2 mm, HL 29.8); snout round, posed of minute spines. Tibia longer than thigh; tips of slightly protruding, longer than eye diameter (SL 12.3 toes blunt, slightly round; webbing well developed, for- mm, ED 8.4 mm); canthus rostralis indistinct; loreal re- mula I0–0II0–⅓III0–⅓IV½–0V; tibio-tarsal articula- gion concave; nostrils closer to eyes than to tip of snout tion reaching between eye and tip of snout. Skin: dorsal (EN 5.1 mm, NS 4.5 mm); interorbital distance narrower surface of head, body and flanks with flattened tubercles; than internarial distance and upper eyelid (IND 7.1 mm, supratympanic fold distinct; dorsal surface of limbs and IOD 5.1 mm, UEW 7.3 mm); vomerine teeth present; thighs smooth; dorsal surface of tibia with fine tubercles; tongue cordiform, deeply notched posteriorly; tympa- throat, chest, belly and ventral surface of thighs smooth. num indistinct. Arm short; fingers free of webbing; tips Coloration in life: head with a narrow light brown bar in interorbital region; dorsum yellowish brown with of fingers round, slightly enlarged, without discs; toes a light yellow vertebral stripe and a dark brown mark- short and thin; tips of toes round, distinctly enlarged, ing; upper part of flanks yellowish brown, lower part of without discs; toes fully webbed. Skin: dorsal surface flanks yellowish white; dorsal surface of fore and hind of head, body and limbs shagreened with regularly dis- limbs yellowish brown with black crossbars; throat and posed glandular warts; supratympanic fold distinct; up- chest white with dark brown marking; ventral surface of per part of flanks shagreened with elongated glandular fore and hind limbs, as well as belly white (Pham et al. warts, lower part with small tubercles; dorsolateral folds 2017b). absent; venter smooth. Distribution. This species is currently known only from Colouration in life: dorsal surface light brown, with Quang Ninh and Bac Giang provinces, Vietnam (Pham grey spots; dorsal surface of limbs with black crossbars; et al. 2017b, 2019). supratympanic fold black; lips with vertical bars; venter yellowish white, gular region with black marbling. Male Occidozyga lima (Gravenhorst, 1829) with black nuptial spines present on finger I (Dubois and Figure 4G Ohler 2009). Material examined. VIETNAM • 1 ♂; Quang Ninh Distribution. This species is currently known only from Province, Hai Ha District, Quang Son Commune; 21° Lang Son and Bac Giang provinces, Vietnam (Ohler 31.420′N, 107°38.940′E; alt. 144 m; 7 May 2016; Pham and Dubois 2009; Hecht et al. 2013; Frost 2020). This CT and Nguyen TV leg.; collected in the water near rice is the first record of Q. acanthophora from Quang Ninh field; IEBR 4647. Province. 1034 Check List 16 (4)

Ranidae Rafinesque, 1814 and body smooth, except granular on posterior part of thigh around vent; supratympanic fold absent; dorsolat- Amolops ricketti (Boulenger, 1899) eral fold present, extending from rear of tympanum to Figure 5A inguinal region; throat, chest, belly and ventral surface Materials examined. VIETNAM • 2 ♂, 3 ♀; Quang of thigh smooth. Ninh Province, Hai Ha District, Quang Son Commune; Coloration in life: dorsum light green; head side black, 21°31.878′N, 107°38.889′E; alt. 185 m; 5 May 2016; Pham with a yellowish stripe on upper lip extending from snout CT and Nguyen TV leg.; collected on the rock of small tip to axilla; flanks yellowish brown with green marking; streams; IEBR 4649–4653. dorsal surface of fore and hind limbs light olive green Identification. Size medium (males SVL 37.5–41.5 mm, with irregular, narrow, incomplete greyish brown bands; females SVL 52.1–54.6); head longer than broad (HL venter immaculate yellow (Yuan et al. 2018). 14.6–19.4 mm, HW 13.9–18.8 mm); snout round; nostril Distribution. The species was previously known only at the midway between eye and tip of snout (EN 2.6–3.8 from the Wenshan National Nature Reserve, Yunnan mm, NS 2.7–3.6 mm); tympanum round, small, about 1/3 Province and Jingxi County, Guangxi Province, China of eye length (TYD 1.4–2.0 mm; ED 3.8–5.6 mm); vo- (Yuan et al. 2018). Pham et al. (2020) provided the first merine teeth present; tongue notched posteriorly; males record of this species in Quang Ninh Province, Vietnam. with vocal sacs. Finger short, free of webbing, with en- Remarks. The specimen from Vietnam slightly differs larged discs; toes fully webbed, without tarsal fold; from the type series from China by having a smaller size intercalary cartilage tubercles absent; toe discs with cir- (SVL 33.2 mmvs 35.7–39.9 mm in males) and the presence cummarginal groove, smaller than finger discs; tibio-tar- of distinct transverse bands on dorsal surfaces of limbs. sal articulation reaching to tip of snout. Skin: dorsum flattened granules, venter smooth. Hylarana taipehensis (Van Denburgh, 1909) Coloration in life: dorsum greyish brown with light Figure 5C grey streaks; throat and chest with dark grey streaks; Material examined. VIETNAM • 1 ♀; Quang Ninh venter cream (Bourret 1942; Inger et al. 1999). Province, Hai Ha District, Quang Son Commune; 21° Distribution. In Vietnam, this species has been reported 30.668′N, 107°40.346′E; alt. 95 m; 8 May 2016; Pham CT from northern to central Vietnam. Elsewhere, the species and Nguyen TV leg.; collected on the ground in a rice is known from China (Nguyen et al. 2009). field; IEBR 4654. Identification. Size medium (female SVL 36.9 mm); Amolops wenshanensis Yuan, Jin, Li, Stuart & Wu, head longer than wide (HL 12.9 mm, HW 10.2 mm); 2018 snout pointed; nostril closer to tip of snout than to eye Figure 5B (EN 3.5 mm, NS 2.5 mm); tympanum distinct, approx- Material examined. VIETNAM • 1 ♂; Quang Ninh imately same with eye diameter (TYD 2.6 mm, ED Province, Hai Ha District, Quang Son Commune; 21° 2.8 mm); vomerine teeth present; tongue notched pos- 35.635′N, 107°40.349′E; alt. 950 m; 9 May 2016; Pham teriorly. Fingers small, free of webbing, tips of fingers CT and Nguyen TV leg.; collected from a tree, about 1.5 swollen; toes with webbing, webbing formula I2–2II1– m above the ground, near a waterfall of a rocky stream; 2½III1–3IV2–1V; tibio-tarsal articulation reaching to tip IEBR 4503. of snout. Skin: dorsal and ventral surfaces smooth; dor- Identification. Body slender, size medium (male SVL solateral fold distinct. 33.2 mm); head longer than wide (HL 12.8 mm, HW Coloration in life: dorsum green, with two stripes 12.0 mm); snout obtusely round in dorsal view, pro- from behind the eyes to groins; venter white (Bourret jecting beyond lower jaw; nostril lateral, closer to the 1942; Inger et al. 1999). tip of snout than to eye (NS 2.6 mm, EN 3.2 mm); can- Distribution. This is a widespread species in Vietnam thus rostralis distinct; pupil horizontally oval; loreal (Nguyen et al. 2009). Elsewhere, the species is known region slightly concave and oblique; snout longer than from India and Nepal southwards to Thailand and Cam- eye diameter (SL 5.6 mm, ED 5.3 mm); tympanum dis- bodia (Nguyen et al. 2009). tinct, round, smaller than eye diameter (TYD 2.0 mm); vomerine teeth present; tongue notched posteriorly; the Odorrana chloronota (Günther, 1875) male with vocal sac openings at corners of mouth; tips Figure 5D of fingers enlarged into round discs with distinct circum- Materials examined. VIETNAM • 3 ♂, 4 ♀; Quang marginal grooves; disc of finger III equal to tympanum Ninh Province, Hai Ha District, Quang Son Commune; diameter (fd3/TD 0.95); fingers free of webbing; subar- 21°30.760′N, 107°38.557′E; alt. 307 m; 7 May 2016; Pham ticular tubercle distinct, round, formula 1, 1, 2, 2; male CT and Nguyen TV leg.; from the banks or on the rock of with white nuptial pad on finger I; palmar tubercles dis- a rocky stream; IEBR 4655–4661. tinct; discs of toes smaller than those of fingers; webbing Identification. Males smaller than females (males SVL formula: I0–⅓II0–½III0–1IV1–0V; tibio-tarsal articula- 51.5–54.0 mm, females SVL 89.9–99.6 mm); head lon- tion reaching to the nostril. Skin: dorsal surface of head ger than wide (HL 34.8–36.5 mm, HW 30.3–33.3 mm Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1035

Figure 5. Ranidae (A–F) and Rhacophoridae (G, H) of Hai Ha forest, Quang Ninh Province, Vietnam. A. Amolops ricketti (IEBR 4650). B. Amolops wenshanensis (IEBR 4503). C. Hylarana taipehensis (IEBR 4654). D. Odorrana chloronota (IEBR 4660). E. Sylvirana guentheri (IEBR 4662). F. Sylvirana maosonensis (IEBR 4665). G. Kurixalus cf. hainanus (IEBR 4675). H. Polypedates mutus (IEBR 4681). Photographs C.T. Pham. 1036 Check List 16 (4) in females, HL 16.2–17.4 mm, HW 19.4–20.3 mm in Sylvirana maosonensis (Bourret, 1937) males); snout round, longer than eye (SL 14.3–15.6 mm, Figure 5F ED 11.5–12.5 mm in females, SL 8.2–8.7 mm, ED 7.5– Materials examined. VIETNAM • 5 ♂, 3 ♀; Quang 8.1 mm in males); pupil round; tympanum distinct, ap- Ninh Province, Hai Ha District, Quang Son Com- proximately half of eye diameter (TYD 4.9–5.6 mm, ED mune; 21°32.054′N, 107°39.821′E and 21°31.760’N, 107° 11.5–12.5 mm in females, TYD 4.1–5.0 mm, ED 7.5–8.1 38.557’E; alt. 113 m and 307 m; 5–7 May 2016; Pham mm in males); vomerine teeth present; tongue cordiform, CT and Nguyen TV leg.; collected from the banks or on deeply notched posteriorly; males with vocal sacs. Fin- rocks in small streams; IEBR 4665–4672. gers free of webbing; finger discs larger than those of Identification. Size medium (males SVL 36.5–43.2 mm, toes, with circum-marginal groove; toes fully webbed; females SVL 48.1–57 mm); head longer than wide (HL outer metatarsal tubercle absent; inner metatarsal tuber- 14.5–20 mm, HW 13.1–18.8 mm); snout truncate; nos- cle elongate; tibio-tarsal articulation reaching beyond tip tril closer to tip of snout than to eye (EN 2.9–4.5 mm, NS of snout. Skin: dorsal surface of head and body smooth 2.9–3.5 mm); pupil round; tympanum distinct, smaller smooth; flank with small tubercles; supratympanic fold than eye length (TYD 2.8–4.4 mm, ED 4.6–5.4 mm); vo- distinct; dorsolateral fold absent; venter smooth. merine teeth present; tongue notched posteriorly; males Coloration in life: dorsum green with or without black with vocal sacs. Fingers free of webbing, with small discs; spots; lateral side of head and flanks brownish grey; lips discs of toes larger than discs of fingers; toes with web- white; hind limbs with distinct dark brown bars; webbing bing, webbing formula I1–2II1–2½III1–3IV3–1V; tibio- dark grey; venter white (Bourret 1942; Bain et al. 2003). tarsal articulation reaching between eye and tip of snout. Distribution. In Vietnam, this species has been reported Skin: dorsal surface of head, body, flanks and thighs with from Bac Kan, Lang Son, Vinh Phuc, and Lam Dong tubercles; dorsolateral fold distinct; supratympanic fold provinces (Nguyen et al. 2009). This is the first record prominent; venter smooth. of O. chloronota from Quang Ninh Province. Elsewhere, Coloration in life: dorsum yellowish brown, flanks the species has been reported from India, Myanmar to lighter with black spots; limbs with dark brown trans- southern China, and southern Vietnam (Frost 2020). verse bars; tympanum brown; venter whitish (Bourret 1942; Inger et al. 1999). Sylvirana guentheri (Boulenger, 1882) Distribution. This species has been reported from north- Figure 5E eastern and central Vietnam (Frost 2020). Elsewhere, the Materials examined. VIETNAM • 2 ♂, 1 ♀; Quang species has been reported from China and Laos (Frost Ninh Province, Hai Ha District, Quang Son Commune; 2020). 21°31.254′N, 107°40.523′E; alt. 97 m; 8 May 2016; Pham CT and Nguyen TV leg.; collected from the banks of Rhacophoridae Hoffman, 1932 small streams; IEBR 4662–4664. Identification. Size large (males SVL 74.3–84.1 mm, fe- Kurixalus cf. hainanus (Zhao, Wang & Shi, 2005) male SVL 78.8 mm); head longer than broad (HL 26.8– Figure 5G 19.1mm, HW 23.1–26.7 mm); snout obtusely pointed, Materials examined. VIETNAM • 4 ♂, 1 ♀; Quang strongly projecting beyond mouth opening; nostril closer Ninh Province, Hai Ha District, Quang Son Com- to tip of snout than to eye (EN 6.6–7.2 mm, NS 4.6–4.9 mune; 21°32.142′N, 107°39.526′E and 21°34.230′N, 107° mm); tympanum round, distinct; vomerine teeth pres- 38.482′E; alt. 160 m and 450 m; 5–10 May 2016; Pham ent; tongue notched posteriorly; males with vocal sacs. CT and Nguyen TV leg.; collected on tree branches near Fingers slender and rather long, without webbing; tips of a water pool, about 0.5–1.5 m above the ground; IEBR toes slightly round, webbing formula I1–2II1½–2⅓III1½– 4673–4677. 3IV3–1V; tibio-tarsal articulation reaching nearby tip of Identification. Size medium (males SVL 32.8–34.9 mm, snout. Skin: dorsal and ventral surfaces smooth; dorso- female SVL 44.4 mm); Head slightly wider than long lateral fold distinct; supratympanic fold prominent. (HL 11.3–15.0 mm, HW 11.9–15.4 mm); snout pointed Coloration in life: dorsal surface of head and body anteriorly, longer than eye (SL 5.1–7.7 mm, ED 3.8–4.3 reddish brown, with dark brown spots; a black line pres- mm); nostril closer to tip of snout than to eye (NS 2.0– ent on either side of head and upper part of flanks, bor- 3.1 mm, EN 2.5–3.3 mm); tympanum distinct, smaller dering dorsolateral fold below; tympanum dark brown or than eye (TYD 1.9–2.3 mm, ED 3.8–4.3 mm); vomer- reddish; limbs with brown crossbars, rear side of thighs ine teeth in two ridges; males with vocal sacs. Fingers yellow with black mottling; throat or chest speckled with free of webbing, tips of fingers with enlarged discs; toes brown; venter white or yellow (Bourret 1942; Ziegler webbed, webbing formula I½–1II⅓–1III⅓–1IV1–⅓V; 2002). inner metatarsal tubercle small; outer metatarsal tuber- Distribution. This is a common species in lowland areas cle absent; tibio-tarsal articulation reaching between eye of Vietnam (Nguyen et al. 2009). Elsewhere, the species and tip of snout. Skin: some scattered flat tubercles on has been reported from China, Taiwan, Myanmar, and the head, eyelids, and occiput, sparse on dorsum, more Laos (Nguyen et al. 2009; Frost 2020). dense and larger on flanks, fine granules on rump; chin Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1037 granular, chest nearly smooth; venter and lower part of 34.198′N, 107°38.404′E; alt. 460 m; 10 May 2016; Pham sides granular. CT and Nguyen TV leg.; collected on leaves next to a for- Coloration in life: dorsal surface of head and body est path; IEBR 4682. light or reddish brown with green marking, occiput with Identification. Size large (female SVL 51.5 mm); head a dark green marking in triangular shape; tympanum wider than long (HL 20.4 mm, HW 21.7 mm); snout round, brownish; chin cream with dark spots; throat, chest, ven- longer than eye diameter (SL 9.1 mm, ED 5 mm); nostril ter, and underside of limbs cream (Zhao et al. 2005; Fei closer to tip of snout than to eye (NS 2.8 mm, EN 5.7 mm); et al. 2010). tympanum small, oval (TYD 3.8 mm); vomerine teeth Distribution. In Vietnam, this species has been reported present; tongue notched posteriorly. Fingers free of web- from northeastern Vietnam (Yu et al. 2017). This is the bing; tips of fingers and toes enlarged into round discs; first record of K. cf. hainanus from Quang Ninh Pro- toes webbed, webbing formula I0-½II0-1III0-1IV1-0V; vince. Elsewhere, the species has been reported from tibio-tarsal articulation reaching between eye and tip of China (Frost 2020). snout. Skin: dorsal surface of head, body and limbs cov- Remarks. The specimens from Vietnam slightly dif- ered with tubercles or warts of different sizes; ventral skin fer the type series from China by having a lager head with small tubercles; supratympanic fold absent. in males (HL 11.9–12.2 mm vs 9.4–11.8 mm) and rela- Coloration in life: dorsal surface of head and body tive length of fingers I

Figure 6. Rhacophoridae of Hai Ha forest, Quang Ninh Province, Vietnam. A. Theloderma corticale (IEBR 4682). B. Theloderma lateriticum (IEBR4683). C. Zhangixalus dennysi (IEBR 4685). D. Zhangixalus pachyproctus (IEBR 4688). Photographs C.T. Pham. granular; posterior part of dorsum, flanks, dorsal surface 21°31.681′N, 107°38.582′E; alt. 290 m; 7 May 2016; Pham and lateral sides of limbs with small calcified spicules; CT and Nguyen TV leg.; collected on tree branches near supratympanic and dorsolateral fold absent; throat, chest small streams, about 1.0–2.0 m above the ground; IEBR smooth; belly and ventral surface of thighs granular; der- 4684–4686. mal appendage at vent absent. Identification. Size large (male SVL 85.2 mm, females Colouration in life: dorsal surface of head and body SVL 82.1–107.9 mm); head slightly broader than long deep brick-red or gray brown with some black blotches; (HL 27.1–34.6 mm, HW 29.7–36 mm); nostril oval, closer upper lip and tympanum with small white spots; iris brick- to tip of snout than to eye (NS 5.1–6.2 mm, EN 7.1–8.1 red; flank with bright white spots interspersed with black mm); tympanum round, smaller than eye diameter (TYD blotches; forelimb, dorsal surface of thigh, tibia and foot 5.3–7.1 mm, ED 7.1–8.1 mm); vomerine teeth present; reddish brown with black bands; venter greyish brown tongue notched posteriorly; the male with vocal sac. Tips with white spots (Bain et al. 2009; Hecht et al. 2013). of fingers with enlarged discs, larger than those of toes, Distribution. In Vietnam, this species is currently known webbing formula I1-1II-1⅓III½-½IV; tips of toes with only from the type locality (Van Ban District, Lao Cai enlarged discs, toes fully webbed; tibio-tarsal articula- Province) (Frost 2020). This is the first record of T. lat- tion reaching between eye and tip of snout. Skin: dorsum eriticum from Quang Ninh Province. Elsewhere, the spe- and flanks smooth; belly and ventral surface of thighs cies has been reported from Shiwandashan National granular; supratympanic fold distinct. Nature Reserve, southern Guangxi, China (Frost 2020). Coloration in life: dorsum green with whitish grey blotches; lower part of flanks and venter cream; chest Zhangixalus dennysi (Blanford, 1881) green (Ziegler 2002; Fei et al. 2009, 2010). Figure 6C Distribution. In Vietnam, this species has been reported Materials examined. VIETNAM • 1 ♂, 2 ♀; Quang from Cao Bang Province in the north, southward to Ninh Province, Hai Ha District, Quang Son Commune; Quang Binh Province (Pham et al. 2017a). This is the first Pham et al. | Anuran fauna of Hai Ha forest, Vietnam 1039 record of Z. dennysi from Quang Ninh Province. Else- galeatus, Leptobrachella minima, Megophrys maoso- where, the species has been reported from China, Myan- nensis, Odorrana chloronota, Quasipaa acanthophora, mar, and Laos (Nguyen et al. 2009; Frost 2020). Kurixalus cf. hainanus, Theloderma lateriticum, T. cor- ticale, Zhangixalus dennysi, and Z. pachyproctus—were Zhangixalus pachyproctus Yu, Hui, Hou, Wu, Rao recorded for the first time from Quang Ninh Province. & Yang 2019 Among the reported species, Limnonectes quangnin- Figure 6D hensis and Quasipaa acanthophora are currently known VIETNAM • 2 ♀; Quang Ninh Materials examined. only from Vietnam (Dubois and Ohler 2009; Pham et al. Province, Hai Ha District, Quang Son Commune; 2017b). The evergreen forest of Hai Ha District also har- 21°31.633′N, 107°38.640′E; alt. 234 m; 6 May 2016; Pham bors several threatened species: one species (Q. acan- CT and Nguyen TV leg.; collected on tree branches near thophora) listed as Vulnerable in the IUCN Red List rocky streams, about 1.5–2.5 m above the ground; IEBR (2020) and two species (I. galeatus and T. corticale) 4687–4688. listed as Endangered in the Red Data Book of Vietnam Identification. Size large (females SVL 73.1–93.9 mm); (Tran et al. 2007). Although the evergreen forest of Hai head broader than long (HL 25.2–34.6 mm, HW 27.2– Ha District harbors a considerable number of endemic 37.9 mm); nostril oval, closer to tip of snout than to eye (NS 5.3–6.5 mm, EN 5.9–8.4 mm); tympanum dis- and threatened species, its biodiversity is currently tinct, round, smaller than eye diameter (TYD 4.8–6.0 threatened by expanding agriculture and illegal timber mm, ED 6.5–7.7 mm); vomerine teeth present; tongue logging (Pham et al. 2017b). In addition, amphibians and notched posteriorly. Fingers with webbing, webbing reptiles are also collected by local people for food and formula I1–½II⅓–⅓III⅓–½IV; tips of fingers with en- pet trade. A new water snake species recently discov- larged discs; toes fully webbed, tips of toes with enlarged ered in Hai Ha was tracked in the pet trade in Vietnam discs, smaller than those of fingers; tibio-tarsal articula- before its official discovery (Ziegler et al. 2019), reveal- tion reaching between eye and tip of snout. Skin: dorsum ing that capture events for the wild animal trade happen smooth; belly, ventral surface of thighs, and lower part of in this region, which also harbours rare, endemic and flank ganular; supratympanic fold distinct. threatened taxa such as the Vietnamese Crocodile Liz- Coloration in life: dorsal surface of head and body ard (Shinisaurus crocodilurus vietnamensis van Schin- uniformly green; a narrow white stripe present along the gen, Le, Ngo, Pham, Ha, Nguyen & Ziegler, 2016) (van flanks; venter cream (Yu et al. 2019). Schingen et al. 2016a, 2016b). Additional surveys are Distribution. In Vietnam, this species has been reported required to obtain further data on the actual biodiversity from Dien Bien, Son La, Cao Bang, Bac Giang, Thanh of this forest. The establishment of a new protected area Hoa, Nghe An and Quang Binh provinces (Pham et al. should be seriously considered in order to protect the 2017a; Yu et al. 2019). This is the first record ofZ. pachy- remaining evergreen forests and their unique biodiver- proctus from Quang Ninh Province. Elsewhere, the spe- sity in Quang Ninh Province. cies has been reported from Southern Yunnan, Thailand, and Laos (Yu et al. 2019; Frost 2020). Remarks. Based on morphological and molecular evi- Acknowledgements dences Yu et al. (2019) suggested that previous records We are grateful to the directorate of the Forest Protec- of Rhacophorus maximus in Vietnam, Laos, and Thai- tion Department of Quang Ninh Province for support land should be provisionally assigned to Z. pachyproc- of our field work and issuing relevant permits (no. 432/ tus. Zhangixalus pachyproctus can be distinguished TCL-BTTN on 13 April 2015 and no. 436/TCL-BTTN on from its sister species by the combination of the follow- 31 March 2016). We thank T.V. Nguyen (Ninh Binh) for ing characters: the protruding vent (vs not protruding their assistance in the field and AM Luong (Hanoi) for in Z. smaragdinus); the shape of snout (more oblique in laboratory assistance. We thank T.A. Tran (Hanoi) for profile than that inZ. smaragdinus); interspace between providing the map. For the fruitful cooperation within vomerine teeth ridges norrow (broader in Z. smaragdi- nus); color pattern (large thick grey reticular mottles be- joint amphibian projects we cordially thank SV Nguyen low the white stripe on flankvs fine in Z. smaragdinus) (Hanoi), T. Pagel, and C. Landsberg (Cologne Zoo). This (Yu et al. 2019). research was funded by the Vietnam Academy of Sci- ence and Technology (grant no. VAST04.09/19–20) to Discussion C.T. Pham. In this study, 27 species of amphibians were recorded Authors’ Contributions from the Hai Ha forest in Quang Ninh Province. We found the highest number of species (seven) belonging CTP and HNN collected materials in the field; CTP, to family Dicroglossidae, followed by Ranidae and Rha- QHD, and TQN wrote the manuscript; TQN, TTT, and cophoridae with six each. Ten species—Ingerophrynus TZ reviewed the manuscript. 1040 Check List 16 (4)

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