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Figure 2 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 2 - Bayesian inference dendrogram of Ophryophryne (including other megophryid outgroups) derived from the analysis of a 2077 bp DNA sequences of the 12S rRNA–16S rRNA mtDNA gene. Voucher specimen IDs and GenBank accession numbers are given in Table 1. Numbers near branches represent BPP/BS support values for BI/ML inferences respectively. Color of clade labels for Ophryophryne corresponds to icon colors on Fig. 1. I and II represent Group I and Group II defined in the results section; numbers 1, 2 and 3 next to nodes in Group II represent species level clades; A–E represent subclades within species level clades.

Figure 12 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 12 - Coloration of Ophryophryne tadpoles in life: A Ophryophryne elfina sp. n. "(ZMMU A-5684, field number NAP-02673; Stage 25) from Chu Pan Fan Mt., 1900 m a.s.l. in Chu Yang Sin N.P., Dak Lak Prov., mouth funnel open B tadpole from the same locality and collection data (ZMMU A-5684, field number NAP-02673; Stage 25) with mouth funnel closed.. Photos by N.A. Poyarkov.

Figure 11 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 11 - External morphology of the tadpole of Ophryophryne elfina sp. n. (ZMMU A-5679, field number NAP-01169; Stage 25, TOL = 30.2 mm). A lateral view, mouth funnel closed (in preservative) B dorsal view, mouth funnel open (in life). Drawings by V.D. Kretova.

Figure 1 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 1 - Distribution of Ophryophryne species in southern Indochina (Langbian Plateau in Vietnam, and adjacent regions of Camodia), indicating localities sampled in this study. Black dot in the center of an icon indicates the type locality of the new species. Locality information. 1 O Chung Chry stream, Samling Logging Concession, O'Rang Dist., Mondolkiri Prov., Cambodia (500 m a.s.l.) (Stuart et al. 2006; type locality of O. synoria; Mahony et al. 2017) 2 Bu Gia Map N.P., Binh Phuoc Prov., Vietnam (400 m a.s.l.) (Vassilieva et al. 2016; this study) 3 Nam Cat Tien sector of Dong Nai Biosphere Reserve, Dong Nai Prov., Vietnam (200 m a.s.l.) (Vassilieva et al. 2016; this study) 4 Loc Bac forest, Bao Loc Dist., Lam Dong Prov., Vietnam (830 m a.s.l.) (this study) 5 Cam Ly River (Ohler 2003: type locality of O. gerti) and Nui Ba Mt. in environs of Dalat city, Lam Dong Prov., Vietnam (ca. 1000–1800 m a.s.l.) (this study) 6 Environs of Bidoup Mt. (2000 m a.s.l.), and Giang Ly Ranger Station (1500 m a.s.l.), Bidoup–Nui Ba N.P., Lam Dong Prov., Vietnam (Poyarkov [Paiarkov] and Vassilieva 2011; this study) 7 Hon Giao Mt., Bidoup–Nui Ba N.P., Lam Dong and Khanh Hoa provincial border, Vietnam (1900–2000 m a.s.l.) (this study) 8 Hon Ba Mt., Hon Ba N.R., Dien Khanh Dist., Khanh Hoa Prov., Vietnam (950–1510 m a.s.l.) (Nguyen et al. 2014; this study) 9 Nui Chua Mt., Nui Chua N.P., Ninh Hai Dist., Ninh Thuan Prov., Vietnam (780 m a.s.l.) (this study) 10 Chu Pan Fan Mt., Chu Yang Sin N.P., Lak Dist., Dak Lak Prov., Vietnam (1900 m a.s.l.) (type locality of Ophryophryne elfina sp. n.; this study) 11 Chu Yang Sin Mt. environs, Krong Kmar Commune, Krong Bong Dist., Dak Lak Prov., Vietnam (700–2000 m a.s.l.) (Orlov et al. 2008; this study) 12 Tay Hoa Dist., Phu Yen Prov., Vietnam (700 m a.s.l.) (this study).

Figure 10 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 10 - Paratypes of Ophryophryne elfina sp. n. in life. A–D Bidoup Mt., Bidoup–Nui Ba N.P., Lam Dong Prov., 2000 m a.s.l.: A ZMMU A-4788 (field number NAP-01449), male, dorsolateral view B ZMMU A-4788 (field number NAP-01455), female, dorsolateral view C ZMMU A-4788 (field number NAP-01449), male, ventral view D ZMMU A-4788 (field number NAP-01455), female, ventral view E–F Chu Yang Sin Mt., Chu Yang Sin N.P., Dak Lak Prov., 1800 m a.s.l.: E ZMMU A-5691 (field number ABV-00580), metamorph, dorsolateral view F ZMMU A-5691 (field number ABV-00581), metamorph, dorsolateral view. Photos by N.A. Poyarkov.

Figure 7 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 7 - Holotype Ophryophryne gerti (BMNH 1921.4.1.324, male) in preservative: A dorsal view B ventral view C head, lateral view D volar view of the left hand E plantar view of the left foot. Photos by S. Mahony.

Figure 5 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 5 - Oscillograms (top) and sonograms (bottom) of male advertisement calls of A Ophryophryne elfina sp. n. (Lam Dong Prov., Bidoup-Nui Ba N.P., 1935 m a.s.l., 17°C) B O. gerti (Dak Lak Prov., Chu Yang Sin N.P., 1020 m a.s.l., 22°C) C O. synoria (Dak Lak Prov., Chu Yang Sin N.P., 750 m a.s.l., 21°C). The sampling rate lowered to 22.05 kHz.

Figure 6 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 6 - Ophryophryne species of the Langbian Plateau (Vietnam): A O. gerti, female, Chu Yang Sin N.P., Dak Lak Prov., 1000 m a.s.l. B O. gerti, male, Chu Yang Sin N.P., Dak Lak Prov., 1000 m a.s.l. C O. gerti, male, Bidoup–Nui Ba N.P., Lam Dong Prov., 1550 m a.s.l. D O. synoria, female, Bu Gia Map N.P., Binh Phuoc Prov., 400 m a.s.l. E O. synoria, male, Chu Yang Sin Mt., Chu Yang Sin N.P., Dak Lak Prov., 1000 m a.s.l. F O. synoria, male, Bidoup–Nui Ba N.P., Lam Dong Prov., 1550 m a.s.l. G Ophryophryne elfina sp. n., male, Chu Yang Sin Mt., Chu Yang Sin N.P., Dak Lak Prov., 2000 m a.s.l. H Ophryophryne elfina sp. n., male, Hon Giao Mt., Bidoup–Nui Ba N.P., Lam Dong and Khanh Hoa provincial border, 2000 m a.s.l. Photos by N.A. Poyarkov and N.L. Orlov.

Figure 8 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 8 - Holotype Ophryophryne elfina sp. n. (ZMMU A-5669, male, field number NAP-02658) in preservative: A dorsal view B ventral view C head, lateral view D volar view of the left hand E plantar view of the left foot. Photos by N.A. Poyarkov.

Figure 9 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 9 - Holotype of Ophryophryne elfina sp. n. in life (ZMMU A-5669, male, field number NAP-02658), dorsolateral view. Photos by N.A. Poyarkov.

Figure 4 from: Poyarkov Jr NA, Duong TV, Orlov NL, Gogoleva SS, Vassilieva AB, Nguyen LT, Nguyen VDH, Nguyen SN, Che J, Mahony S (2017) Molecular, morphological and acoustic assessment of the genus Ophryophryne (Anura, Megophryidae) from Langbian Plateau, southern Vietnam, with description of a new species. ZooKeys 672: 49-120. https://doi.org/10.3897/zookeys.672.10624

Figure 4 - Two-dimensional plots of A the first two factors of PCA, and B the first and third factors of morphological characters for the Ophryophryne specimens examined. Data are given for males only. Star indicates the holotype specimen for each species. Circle color corresponds to those given in Fig. 1.

Figure 2 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 2 Begonia albopunctata Y.M. Shui, W.H. Chen & H.Q. Nguyen A Habitat B Inflorescence C View of adaxial leaf D Close-up of adaxial leaf E View of abaxial leaf F Close-up of abaxial leaf G Pistillate flower, side view H Staminate flower, face view I Pistillate flower, face view J Fruits K Serial cross sections of ovary. (A–J photographs by Y.M. Shui; K by S. Radbouchoom).

Figure 6 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 6 Begonia minissima H.Q. Nguyen, Y.M. Shui & W.H. Chen A Habitat B Plant with rhizome C View of adaxial leaf D View of abaxial leaf E Inflorescence F Staminate flower, face view, side view and dorsal view G Pistillate flower, side views and dorsal view H Capsule I Serial cross sections of ovary. (A–D photographs by Y.M. Shui; E–I by S. Radbouchoom).

Figure 1 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 1 The geographical distribution of the seven new species of Begonia (Begoniaceae) from North Vietnam and South China under QGIS version 2.14.19.

Figure 5 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 5 Begonia gulongshanensis Y.M. Shui & W.H. Chen A Habitat B View of adaxial leaf C View of abaxial leaf D Staminate flower, face view, side view and dorsal view E Pistillate flower, face view and side view F Inflorescence K Cross section of ovary in the middle part. (All photographs by Y.M. Shui).

Figure 8 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 8 Begonia rhytidophylla Y.M. Shui & W.H. Chen A and B Habitat C Plant D Stipule and petiole E Close-up of adaxial leaf F View of adaxial leaf G View of abaxial leaf H Young leaf adaxially I Young leaf abaxially J Inflorescence K Serial cross sections of ovary L Staminate flower, face view, side view and dorsal view M Pistillate flower, face view, side view and dorsal view. (A, B, photographs by Y.M. Shui; C–M by S. Radbouchoom).

Figure 7 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 7 Begonia mollissima Y.M. Shui, H.Q. Nguyen & W.H. Chen A Habitat B Plant C View of adaxial leaf D Close-up of adaxial leaf E View of abaxial leaf F Close-up of abaxial leaf G Young leaf adaxially H Young leaf adaxially I Petiole J Stipule, adaxial view and abaxial view K Inflorescence L Staminate flower, face view, side view and dorsal view M Pistillate flower, face view, side view and dorsal view N Fruit, side view O Close-up of ovary cross section P Serial cross sections of ovary. (All photographs by Y.M. Shui).

Figure 4 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 4 Begonia erectocarpa H.Q. Nguyen, Y.M. Shui & W.H. Chen A Habitat B Stipule, dorsal view and face view C View of adaxial leaf D Close-up of adaxial leaf E View of abaxial leaf F Close-up of abaxial leaf G Inflorescence H Staminate flower, face view, side view and dorsal view I Pistillate flower, face view, side view and dorsal view J Fruits K Young fruit L Serial cross sections of ovary. (A, C, E, H, I, J, K photographs by S.W. Guo; B, D, F, G and L by H.Q. Nguyen).

Figure 3 from: Chen W-H, Radbouchoom S, Nguyen HQ, Nguyen HT, Nguyen KS, Shui Y-M (2018) Seven new species of Begonia (Begoniaceae) in Northern Vietnam and Southern China. In: Jin X-H, Shui Y-M, Tan Y-H, Kang M (Eds) Plant diversity in Southeast Asia. PhytoKeys 94: 65-85. https://doi.org/10.3897/phytokeys.94.23248

Figure 3 Begonia bambusetorum H.Q. Nguyen, Y.M. Shui & W.H. Chen A Habitat B Plant C View of adaxial leaf D View of abaxial leaf E Close-up of adaxial leaf F Close up of abaxial leaf G Stipule and petiole H Staminate flower, face view, side view and dorsal view I Pistillate flower, face view and side view J Fruits K Serial cross sections of ovary. (A–D photographs by Y.M. Shui; E–K by S. Radbouchoom).