title: A new species of Leptolalax (Anura: Megophryidae) from Vietnam and Cambodia.
abstract: We describe a new, medium-sized Leptolalax species from the Kon Tum Plateau of Vietnam and adjacent Cambodia. Leptolalax isos sp. nov. is distinguished from its congeners by a combination of an absence of distinct dark brown/black dorsolateral markings; toes with rudimentary webbing, wide lateral dermal fringes in males and weak or absent lateral dermal fringes in females; most males with wide lateral dermal fringes on Finger II, a body size of 23.7-27.9 mm in 38 adult males and 28.6-31.5 mm in 9 adult females, near immaculate white chest and belly; absence of white speckling on the dorsum; and a call consisting of 2-3 notes with a dominant frequency of 5.9-6.2 kHz (at 22.4-22.8º C). Uncorrected sequence divergences between L. isos sp. nov. and all homologous 16S rRNA sequences available are &gt;10%. At present, the new species is known from montane evergreen forest between ~650-1100 m elevation in northeastern Cambodia and central Vietnam. Habitat within the range of the new species is threatened by deforestation and upstream hydroelectric dams.
authors.affiliation: Australian Museum Research Institute, Australian Museum, 1 William St, Sydney NSW 2010, Australia College of Marine and Environmental Science, Centre for Tropical Biodiversity and Climate Change, James Cook University, Townsville, Qld 4811 Australia; Email: Jodi.Rowley@austmus.gov.au.
authors.forename: Jodi J L
authors.initials: JJ
authors.lastname: Rowley
authors.affiliation: North Carolina Museum of Natural Sciences, 11 West Jones Street, Raleigh, NC 27601, USA; Email: unknown.
authors.forename: Bryan L
authors.initials: BL
authors.lastname: Stuart
authors.affiliation: Fauna & Flora International (FFI), Cambodia Programme #19, St. 360, Boeng Keng Kang I, Phnom Penh, Cambodia Department of National Parks, Ministry of Environment, 48 Samdech Preah Sihanouk, Tonle Bassac, Chamkarmorn, Phnom Penh, Cambodia; Email: unknown.
authors.forename: Thy
authors.initials: T
authors.lastname: Neang
authors.affiliation: Faculty of Biology, Vietnam National University Ho Chi Minh City, University of Science, 227 Nguyen Van Cu, District 5, Ho Chi Minh City, Vietnam; Email: unknown.
authors.forename: Huy D
authors.initials: HD
authors.lastname: Hoang
authors.affiliation: Institute of Ecology and Biological Resources, 18 Hoang Quoc Viet, Nghia Do, Tu Liem, Hanoi, Vietnam; Email: unknown.
authors.forename: Vinh Q
authors.initials: VQ
authors.lastname: Dau
authors.affiliation: North Carolina Museum of Natural Sciences, 11 West Jones Street, Raleigh, NC 27601, USA; Email: unknown.
authors.forename: Tao T
authors.initials: TT
authors.lastname: Nguyen
authors.affiliation: Conservation International, Asia-Pacific Field Division, 318 Tanglin Road #01-30, Block B, Singapore 247979; Email: unknown.
authors.forename: David A
authors.initials: DA
authors.lastname: Emmett
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D001001:Anura / Q000033:anatomy & histology* / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D049628:Body Size; D002160:Cambodia; D017753:Ecosystem; D005260:Female; D008297:Male; D008969:Molecular Sequence Data; D009929:Organ Size; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D014744:Vietnam
chemical_list: D012336:RNA, Ribosomal, 16S